Bump actions/upload-artifact from 5 to 6

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 5 to 6.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v5...v6)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/performance.yml

@@ -57,7 +57,7 @@ jobs:
         uses: "ramsey/composer-install@v3"
 
       - name: "Upload composer.lock as build artifact"
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: composer.lock-${{ matrix.php-version }}
           path: composer.lock

.github/workflows/static-analysis.yml

@@ -51,7 +51,7 @@ jobs:
         uses: "ramsey/composer-install@v3"
 
       - name: "Upload composer.lock as build artifact"
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: "composer-lock-static-analysis-phpstan"
           path: composer.lock