update order of condition check for github action

Author: corybekk

.github/workflows/semantic-lint.yml

@@ -15,7 +15,7 @@ jobs:
   semantic-lint:
     runs-on: ubuntu-latest
     steps:
-      - if: ${{ github.repository == 'ekristen/aws-nuke' }}
-      uses: amannn/action-semantic-pull-request@v5
+      - uses: amannn/action-semantic-pull-request@v5
+        if: ${{ github.repository == 'ekristen/aws-nuke' }}
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}