chore: update pipeline to use new output variable

Author: evilmonkeyinc

.github/workflows/pull_request.yaml

@@ -69,7 +69,7 @@ jobs:
         id: output
         if: env.GIT_DIFF
         run: |
-          echo "::set-output name=git_diff::${{ env.GIT_DIFF }}"
+          echo "git_diff=${{ env.GIT_DIFF }}" >> $GITHUB_OUTPUT
   release:
     runs-on: ubuntu-latest
     needs: [release_check]

.github/workflows/push_main.yaml

@@ -90,7 +90,7 @@ jobs:
         if: env.GIT_DIFF
         id: output
         run: |
-          echo "::set-output name=git_diff::${{ env.GIT_DIFF }}"
+          echo "git_diff=${{ env.GIT_DIFF }}" >> $GITHUB_OUTPUT
   release:
     runs-on: ubuntu-latest
     needs: [test, lint, release_check]