gitlab: update.py: invoke bundle lock manually

`bundix -l` doesn't work, as it treats bundler's warning about upgrading
the lockfile version as an error, so invoke `bundle lock` manually.

(cherry picked from commit 4c26ab4)

pkgs/applications/version-management/gitlab/update.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env nix-shell
-#! nix-shell -i python3 -p bundix common-updater-scripts nix nix-prefetch-git python3 python3Packages.requests python3Packages.lxml python3Packages.click python3Packages.click-log vgo2nix yarn2nix-moretea.yarn2nix
+#! nix-shell -i python3 -p bundix bundler common-updater-scripts nix nix-prefetch-git python3 python3Packages.requests python3Packages.lxml python3Packages.click python3Packages.click-log vgo2nix yarn2nix-moretea.yarn2nix
 
 import click
 import click_log
@@ -135,6 +135,7 @@ def update_rubyenv():
         with open(rubyenv_dir / fn, 'w') as f:
             f.write(repo.get_file(fn, rev))
 
+    subprocess.check_output(['bundle', 'lock'], cwd=rubyenv_dir)
     subprocess.check_output(['bundix'], cwd=rubyenv_dir)
 
 
@@ -174,6 +175,7 @@ def update_gitaly():
         with open(gitaly_dir / fn, 'w') as f:
             f.write(repo.get_file(fn, f"v{gitaly_server_version}"))
 
+    subprocess.check_output(['bundle', 'lock'], cwd=gitaly_dir)
     subprocess.check_output(['bundix'], cwd=gitaly_dir)
 
     os.environ['GOROOT'] = ""