Bump actions/upload-artifact from 6.0.0 to 7.0.0

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 6.0.0 to 7.0.0.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v6...v7)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: 7.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/build.yml

@@ -146,7 +146,7 @@ jobs:
         run: dotnet pack --configuration Release --property:PackageOutputPath="$PWD/nupkgs" --version-suffix "ci.$(date -u +%Y%m%dT%H%M%S)+sha.${GITHUB_SHA:0:9}" -p:ContinuousIntegrationBuild=true
 
       - name: Upload artifacts
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7.0.0
         with:
           name: EFCore.PG.CI
           path: nupkgs
@@ -178,7 +178,7 @@ jobs:
         run: dotnet pack --configuration Release --property:PackageOutputPath="$PWD/nupkgs" -p:ContinuousIntegrationBuild=true
 
       - name: Upload artifacts
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7.0.0
         with:
           name: EFCore.PG.Release
           path: nupkgs