build(deps): bump actions/checkout from 4.1.0 to 4.1.1 (exercism#2192)

Bumps [actions/checkout](https://github.com/actions/checkout) from 4.1.0 to 4.1.1.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@8ade135...b4ffde6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/pssanalyzer.yml

@@ -13,5 +13,5 @@ jobs:
   analyze:
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608
+      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
       - run: pwsh ./powershell-script-analyzer.ps1

.github/workflows/test.yml

@@ -13,7 +13,7 @@ jobs:
   test:
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608
+      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
       - uses: actions/setup-dotnet@3447fd6a9f9e57506b15f895c5b76d3b197dc7c2
         with:
           dotnet-version: "7.0.100"

exercises/concept/authentication-system/.meta/Exemplar.cs

@@ -40,7 +40,7 @@ public Identity Admin
         get { return new Identity { Email = admin.Email, EyeColor = admin.EyeColor }; }
     }
 
-    public IReadOnlyDictionary<string, Identity> GetDevelopers()
+    public IDictionary<string, Identity> GetDevelopers()
     {
         return new ReadOnlyDictionary<string, Identity>(developers);
     }