chore(actions): stop spamming stale notification for forks + 2 (#26584)

Related to #26578, I also receive these two JobErrors at my end. Both are unnecessary, so I will disable them in the forked repository.







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Author: watany-dev

.github/workflows/repo-metrics.yml

@@ -10,6 +10,8 @@ permissions:
 
 jobs:
   build:
+    # this workflow will always fail in forks; bail if this isn't running in the upstream
+    if: github.repository == 'aws/aws-cdk'
     name: metrics
     runs-on: ubuntu-latest
 

.github/workflows/spec-update.yml

@@ -8,6 +8,8 @@ on:
 
 jobs:
   update-spec:
+    # this workflow will always fail in forks; bail if this isn't running in the upstream
+    if: github.repository == 'aws/aws-cdk'
     name: Update AWS Service Spec packages
     permissions:
       contents: read