Bump actions/upload-artifact from 4 to 7

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4 to 7.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4...v7)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/dotnet.yml

@@ -115,7 +115,7 @@ jobs:
 
       - name: Upload test and coverage artifacts
         if: ${{ always() && hashFiles('FolderDiffIL4DotNet.Tests/FolderDiffIL4DotNet.Tests.csproj') != '' }}
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: TestAndCoverage
           if-no-files-found: warn
@@ -125,7 +125,7 @@ jobs:
             CoverageReport/**
 
       - name: Upload documentation artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: DocumentationSite
           path: _site/**
@@ -137,7 +137,7 @@ jobs:
         run: find publish -name '*.pdb' -delete
 
       - name: Upload artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: FolderDiffIL4DotNet
           path: publish/**

.github/workflows/release.yml

@@ -117,7 +117,7 @@ jobs:
           sha256sum artifacts/*.zip > "artifacts/sha256-${tag_name}.txt"
 
       - name: Upload release artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: ReleaseArtifacts
           path: artifacts/**