Update GH Actions

Action versions were bumped to account for Node.js 20, and the custom
caching actions were replaced with Gradle's new setup-gradle action.

.github/workflows/build.yml

@@ -10,42 +10,29 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
-      - uses: gradle/wrapper-validation-action@v1
+      - uses: actions/checkout@v4
+      - uses: gradle/wrapper-validation-action@v2
 
   build:
     name: "Build using Gradle"
     needs: validate
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
-      - uses: actions/setup-java@v3
+      - uses: actions/setup-java@v4
         with:
           java-version: '17'
           distribution: 'temurin'
           check-latest: true
-      - name: Cache ForgeGradle and Librarian caches
-        uses: actions/cache@v3
+      - uses: gradle/actions/setup-gradle@v3
         with:
-          path: |
-            ~/.gradle/caches/forge_gradle/**
-            !~/.gradle/caches/forge_gradle/assets
-            ~/.gradle/caches/parchmentgradle
-          key: ${{ runner.os }}-gradle-mc-caches-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties', '**/*versions.toml') }}
-          restore-keys: |
-            ${{ runner.os }}-gradle-mc-caches-
-      - uses: burrunan/gradle-cache-action@v1
-        with:
-          arguments: build
           # Read-only cache if not on repo's default branch: https://stackoverflow.com/a/68414395
-          read-only: ${{ format('refs/heads/{0}', github.event.repository.default_branch) != github.ref }}
-          gradle-dependencies-cache-key: |
-            gradle/libs.versions.toml
-          gradle-distribution-sha-256-sum-warning: false
-      - uses: actions/upload-artifact@v3
+          cache-read-only: ${{ format('refs/heads/{0}', github.event.repository.default_branch) != github.ref }}
+      - run: ./gradlew build
+      - uses: actions/upload-artifact@v4
         with:
           name: Build artifacts
           path: build/libs/*.jar