Bump gradle/gradle-build-action in /.github/workflows

Bumps [gradle/gradle-build-action](https://github.com/gradle/gradle-build-action) from 2.3.3 to 2.5.1.
- [Release notes](https://github.com/gradle/gradle-build-action/releases)
- [Commits](gradle/gradle-build-action@3fbe033...40b6781)

---
updated-dependencies:
- dependency-name: gradle/gradle-build-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/ci.yml

@@ -14,12 +14,12 @@ jobs:
         with:
           distribution: 'temurin'
           java-version: 8
-      - uses: gradle/gradle-build-action@3fbe033aaae657f011f88f29be9e65ed26bd29ef # tag=v2
+      - uses: gradle/gradle-build-action@40b6781dcdec2762ad36556682ac74e31030cfe2 # tag=v2
         name: spotless (license header)
         if: always()
         with:
           arguments: spotlessCheck -PspotlessFrom=origin/${{ github.base_ref }}
-      - uses: gradle/gradle-build-action@3fbe033aaae657f011f88f29be9e65ed26bd29ef # tag=v2
+      - uses: gradle/gradle-build-action@40b6781dcdec2762ad36556682ac74e31030cfe2 # tag=v2
         name: api compatibility
         if: always()
         with:
@@ -49,7 +49,7 @@ jobs:
       with:
         distribution: 'temurin'
         java-version: 8
-    - uses: gradle/gradle-build-action@3fbe033aaae657f011f88f29be9e65ed26bd29ef # tag=v2
+    - uses: gradle/gradle-build-action@40b6781dcdec2762ad36556682ac74e31030cfe2 # tag=v2
       name: gradle
       with:
         arguments: :reactor-core:test --no-daemon -Pjunit-tags=!slow
@@ -63,7 +63,7 @@ jobs:
       with:
         distribution: 'temurin'
         java-version: 8
-    - uses: gradle/gradle-build-action@3fbe033aaae657f011f88f29be9e65ed26bd29ef # tag=v2
+    - uses: gradle/gradle-build-action@40b6781dcdec2762ad36556682ac74e31030cfe2 # tag=v2
       name: gradle
       with:
         arguments: :reactor-core:test --no-daemon -Pjunit-tags=slow
@@ -77,7 +77,7 @@ jobs:
       with:
         distribution: 'temurin'
         java-version: 8
-    - uses: gradle/gradle-build-action@3fbe033aaae657f011f88f29be9e65ed26bd29ef # tag=v2
+    - uses: gradle/gradle-build-action@40b6781dcdec2762ad36556682ac74e31030cfe2 # tag=v2
       name: other tests
       with:
         arguments: check -x :reactor-core:test -x spotlessCheck --no-daemon

.github/workflows/publish.yml

@@ -32,7 +32,7 @@ jobs:
       run: ./gradlew qualifyVersionGha
     - name: run checks
       id: checks
-      uses: gradle/gradle-build-action@3fbe033aaae657f011f88f29be9e65ed26bd29ef # tag=v2
+      uses: gradle/gradle-build-action@40b6781dcdec2762ad36556682ac74e31030cfe2 # tag=v2
       with:
         arguments: check -Pjunit-tags=!slow -x jcstress
 
@@ -49,7 +49,7 @@ jobs:
           java-version: 8
       - name: run slower tests
         id: slowerTests
-        uses: gradle/gradle-build-action@3fbe033aaae657f011f88f29be9e65ed26bd29ef # tag=v2
+        uses: gradle/gradle-build-action@40b6781dcdec2762ad36556682ac74e31030cfe2 # tag=v2
         with:
           arguments: reactor-core:test -Pjunit-tags=slow