Add option to disable outdated flake checks in test setup action

Author: monperrus

.github/actions/setup-tests/action.yml

@@ -15,6 +15,7 @@ runs:
       uses: DeterminateSystems/flake-checker-action@3164002371bc90729c68af0e24d5aacf20d7c9f6 # v12
       with:
         fail-mode: true
+        check-outdated: false
     - name: Use Maven dependency cache
       uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
       with: