Update to gradle-build-action 2.6.0

Bumps [gradle/gradle-build-action](https://github.com/gradle/gradle-build-action) from 2.5.1 to 2.6.0.
- [Release notes](https://github.com/gradle/gradle-build-action/releases)
- [Commits](gradle/gradle-build-action@40b6781...bd57605)

See gh-36303

Author: dependabot[bot]

.github/workflows/build-pull-request.yml

@@ -23,7 +23,7 @@ jobs:
         uses: gradle/wrapper-validation-action@v1
 
       - name: Set up Gradle
-        uses: gradle/gradle-build-action@40b6781dcdec2762ad36556682ac74e31030cfe2
+        uses: gradle/gradle-build-action@bd5760595778326ba7f1441bcf7e88b49de61a25
 
       - name: Build
         env: