ci: fix java branch

Author: Manuthor

.github/workflows/ci.yml

@@ -89,7 +89,7 @@ jobs:
     needs: test
     uses: Cosmian/reusable_workflows/.github/workflows/cloudproof_java_in_docker.yml@develop
     with:
-      branch: develop
+      branch: v6.0.0
       target: x86_64-unknown-linux-gnu
       extension: so
       destination: linux-x86-64
@@ -118,7 +118,7 @@ jobs:
       - test
     uses: Cosmian/reusable_workflows/.github/workflows/cloudproof_flutter.yml@develop
     with:
-      branch: develop
+      branch: v7.0.0
       target: x86_64-unknown-linux-gnu
       extension: so
       copy_fresh_build: false