chore: pnpm lock file check on PRs into main

Author: shakkernerd

.github/workflows/pnpm-lockfile-check.yml

@@ -2,7 +2,7 @@ name: Pnpm Lockfile Check
 
 on:
     pull_request:
-        branches: ["*"]
+        branches: [main]
 
 jobs:
     check-lockfile:
@@ -38,4 +38,4 @@ jobs:
                           owner: context.repo.owner,
                           repo: context.repo.repo,
                           body: '❌ The pnpm-lockfile is out of date. Please run `pnpm install --no-frozen-lockfile` and commit the updated pnpm-lock.yaml file.'
-                      })
+                      })