refactor: make it easier to fetch upstream changes

.github/workflows/check-generated.yml

@@ -41,14 +41,15 @@ jobs:
   check-proto:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/setup-go@v4
-        with:
-          go-version: "1.23.1"
-
       - uses: actions/checkout@v4
         with:
           fetch-depth: 1  # we need a .git directory to run git diff
 
+      - uses: actions/setup-go@v4
+        with:
+          go-version-file: "go.mod"
+
+
       - name: "Check protobuf generated code"
         run: |
           set -euo pipefail

.github/workflows/coverage.yml

@@ -12,7 +12,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-go@v4
         with:
-          go-version: "1.23.1"
+          go-version-file: "go.mod"
       - name: Create a file with all the pkgs
         run: go list ./... > pkgs.txt
       - name: Split pkgs into 4 files
@@ -46,10 +46,10 @@ jobs:
     env:
       GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
     steps:
+      - uses: actions/checkout@v4
       - uses: actions/setup-go@v4
         with:
-          go-version: "1.23.1"
-      - uses: actions/checkout@v3
+          go-version-file: "go.mod"
       - uses: technote-space/get-diff-action@v6
         with:
           PATTERNS: |
@@ -68,10 +68,10 @@ jobs:
       matrix:
         part: ["00", "01", "02", "03"]
     steps:
+      - uses: actions/checkout@v4
       - uses: actions/setup-go@v4
         with:
-          go-version: "1.23.1"
-      - uses: actions/checkout@v3
+          go-version-file: "go.mod"
       - uses: technote-space/get-diff-action@v6
         with:
           PATTERNS: |

.github/workflows/e2e-manual.yml

@@ -14,11 +14,11 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 60
     steps:
+      - uses: actions/checkout@v4
       - uses: actions/setup-go@v4
         with:
-          go-version: '1.23.1'
+          go-version-file: "go.mod"
 
-      - uses: actions/checkout@v4
 
       - name: Build
         working-directory: test/e2e

.github/workflows/e2e-nightly-34x.yml

@@ -21,14 +21,14 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 60
     steps:
-      - uses: actions/setup-go@v4
-        with:
-          go-version: '1.23.1'
-
       - uses: actions/checkout@v4
         with:
           ref: 'v0.34.x-celestia'
 
+      - uses: actions/setup-go@v4
+        with:
+          go-version-file: "go.mod"
+
       - name: Build
         working-directory: test/e2e
         # Run make jobs in parallel, since we can't run steps in parallel.

.github/workflows/e2e.yml

@@ -12,10 +12,10 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 15
     steps:
+      - uses: actions/checkout@v4
       - uses: actions/setup-go@v4
         with:
-          go-version: '1.23.1'
-      - uses: actions/checkout@v3
+          go-version-file: "go.mod"
       - uses: technote-space/get-diff-action@v6
         with:
           PATTERNS: |

.github/workflows/fuzz-nightly.yml

@@ -9,11 +9,10 @@ jobs:
   fuzz-nightly-test:
     runs-on: ubuntu-latest
     steps:
+      - uses: actions/checkout@v4
       - uses: actions/setup-go@v4
         with:
-          go-version: '1.23.1'
-
-      - uses: actions/checkout@v4
+          go-version-file: "go.mod"
 
       - name: Install go-fuzz
         working-directory: test/fuzz

.github/workflows/govulncheck.yml

@@ -14,10 +14,10 @@ jobs:
   govulncheck:
     runs-on: ubuntu-latest
     steps:
+      - uses: actions/checkout@v4
       - uses: actions/setup-go@v3
         with:
-          go-version: "1.23.1"
-      - uses: actions/checkout@v3
+          go-version-file: "go.mod"
       - uses: technote-space/get-diff-action@v6
         with:
           PATTERNS: |

.github/workflows/pre-release.yml

@@ -18,7 +18,7 @@ jobs:
 
       - uses: actions/setup-go@v4
         with:
-          go-version: '1.23.1'
+          go-version-file: "go.mod"
 
       # Similar check to ./release-version.yml, but enforces this when pushing
       # tags. The ./release-version.yml check can be bypassed and is mainly

.github/workflows/release-version.yml

@@ -15,7 +15,7 @@ jobs:
 
       - uses: actions/setup-go@v4
         with:
-          go-version: '1.23.1'
+          go-version-file: "go.mod"
 
       - name: Check version
         run: |

.github/workflows/release.yml

@@ -16,7 +16,7 @@ jobs:
 
       - uses: actions/setup-go@v4
         with:
-          go-version: '1.23.1'
+          go-version-file: "go.mod"
 
       - name: Generate release notes
         run: |

.github/workflows/tests.yml

@@ -23,10 +23,10 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 5
     steps:
+      - uses: actions/checkout@v4
       - uses: actions/setup-go@v4
         with:
-          go-version: "1.23.1"
-      - uses: actions/checkout@v3
+          go-version-file: "go.mod"
       - uses: technote-space/get-diff-action@v6
         with:
           PATTERNS: |
@@ -55,10 +55,10 @@ jobs:
     needs: build
     timeout-minutes: 5
     steps:
+      - uses: actions/checkout@v4
       - uses: actions/setup-go@v4
         with:
-          go-version: "1.23.1"
-      - uses: actions/checkout@v4
+          go-version-file: "go.mod"
       - uses: technote-space/get-diff-action@v6
         with:
           PATTERNS: |
@@ -87,10 +87,10 @@ jobs:
     needs: build
     timeout-minutes: 5
     steps:
+      - uses: actions/checkout@v4
       - uses: actions/setup-go@v4
         with:
-          go-version: "1.23.1"
-      - uses: actions/checkout@v4
+          go-version-file: "go.mod"
       - uses: technote-space/get-diff-action@v6
         with:
           PATTERNS: |