Don't try to generate sbom or release on forks (#243)

* Don't try to generate sbom or release on forks

* TEMP

* Fix bug

Author: andrewlock

.github/workflows/BuildAndPack.yml

@@ -70,6 +70,8 @@ jobs:
     name: "Generate attestations and Create Release"
     needs: build-and-test
     runs-on: ubuntu-latest
+    # don't run on forks because they won't have permission
+    if: github.repository == 'andrewlock/NetEscapades.AspNetCore.SecurityHeaders'
     permissions:
       id-token: write
       contents: write # write required for release creation