Merge pull request #47711 from hashicorp/td-fix-ValidateTeamCityConfiguration

Bump Java version to `21` in `Validate TeamCity Configuration` CI workflow

Author: ewbankkit

.github/workflows/gen-teamcity.yml

@@ -20,7 +20,7 @@ jobs:
       - uses: actions/setup-java@be666c2fcd27ec809703dec50e508c2fdc7f6654 # v5.2.0
         with:
           distribution: adopt
-          java-version: 17
+          java-version: 21
           cache: maven
       - name: Build TeamCity Configuration
         run: |

.teamcity/.java-version

@@ -1 +1 @@
-corretto64-17.0.7
+corretto64-21.0.11