build(deps): bump actions/setup-java from 5 to 6 (#8107)

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

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Daniel Dimenshtein <danield@comet.com>

Author: dependabot[bot]

.github/workflows/backend_tests.yml

@@ -70,7 +70,7 @@ jobs:
                 fetch-depth: 1
 
             - name: Set up JDK 25
-              uses: actions/setup-java@v5
+              uses: actions/setup-java@v6
               with:
                 java-version: '25'
                 distribution: 'corretto'

.github/workflows/code_quality.yml

@@ -131,7 +131,7 @@ jobs:
 
       - name: Set up JDK 25
         if: matrix.leg.toolchain == 'java'
-        uses: actions/setup-java@v5
+        uses: actions/setup-java@v6
         with:
           java-version: "25"
           distribution: "corretto"

.github/workflows/sdks_generate_openapi_spec_and_fern_code.yml

@@ -23,7 +23,7 @@ jobs:
           persist-credentials: false
 
       - name: Set up JDK
-        uses: actions/setup-java@v5
+        uses: actions/setup-java@v6
         with:
           java-version: '25'
           distribution: 'corretto'