Bump actions/upload-artifact from 4 to 6

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4 to 6.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4...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] <[email protected]>

Author: dependabot[bot]

.github/workflows/codestyle.yml

@@ -46,7 +46,7 @@ jobs:
         run: ./gradlew codeStyle
       - name: "📤 Upload Failure Reports"
         if: failure()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: core-reports
           path: |
@@ -74,7 +74,7 @@ jobs:
         run: ./gradlew codeStyle
       - name: "📤 Upload Failure Reports"
         if: failure()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: gradle-plugin-reports
           path: |
@@ -102,7 +102,7 @@ jobs:
         run: ./gradlew codeStyle
       - name: "📤 Upload Failure Reports"
         if: failure()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: forge-reports
           path: |

.github/workflows/gradle.yml

@@ -144,7 +144,7 @@ jobs:
           ./tmp1/cli/bin/grails-forge-cli --version
       - name: "📤 Upload CLI Zip to Workflow Summary Page"
         if: ${{ matrix.java == '17' }}
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: 'apache-grails-SNAPSHOT-bin.zip'
           include-hidden-files: true
@@ -279,12 +279,12 @@ jobs:
           --no-build-cache
           --rerun-tasks
       - name: "📤 Upload grails-gradle checksums"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: grails-gradle-checksums
           path: grails-gradle/build/grails-gradle-checksums.txt
       - name: "📤 Upload grails-gradle published artifacts"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: grails-gradle-artifacts.txt
           path: grails-gradle/build/grails-gradle-artifacts.txt
@@ -328,12 +328,12 @@ jobs:
           retry_wait_seconds: 180
           command: ./gradlew publish aggregateChecksums aggregatePublishedArtifacts --no-build-cache --rerun-tasks
       - name: "📤 Upload grails-core checksums"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: grails-core-checksums.txt
           path: build/grails-core-checksums.txt
       - name: "📤 Upload grails-core published artifacts"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: grails-core-artifacts.txt
           path: build/grails-core-artifacts.txt
@@ -350,7 +350,7 @@ jobs:
           mv tmp/apache-grails-wrapper-* tmp/wrapper
           ./tmp/wrapper/grailsw --version
       - name: "📤 Upload Wrapper Zip to Workflow Summary Page"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: apache-grails-wrapper-SNAPSHOT-bin
           path: tmp/wrapper
@@ -384,12 +384,12 @@ jobs:
           --no-build-cache
           --rerun-tasks
       - name: "📤 Upload grails-forge checksums"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: grails-forge-checksums
           path: grails-forge/build/grails-forge-checksums.txt
       - name: "📤 Upload grails-gradle published artifacts"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: grails-forge-artifacts.txt
           path: grails-forge/build/grails-forge-artifacts.txt
@@ -438,7 +438,7 @@ jobs:
           ./gradlew grails-doc:build
           -PgithubBranch=${{ env.TARGET_BRANCH }}
       - name: "📤 Upload Generated Docs to Workflow Result Page"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: grails-docs-${{ env.NOW }}.zip
           path: ./build/distributions/*.zip

.github/workflows/rat.yml

@@ -49,7 +49,7 @@ jobs:
         run: ./gradlew rat
       - name: Upload RAT HTML report
         if: always()
-        uses: actions/upload-artifact@50769540e7f4bd5e21e526ee35c689e35e0d6874 # v4.4.0
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
         with:
           name: rat-report
           path: build/reports/rat/index.html