Merge pull request #310 from NHSDigital/dependabot/github_actions/actions/attest-build-provenance-4

Bump actions/attest-build-provenance from 3 to 4

Author: Themitchell

.github/workflows/stage-3-build.yaml

@@ -89,7 +89,7 @@ jobs:
             COMMIT_SHA=${{ inputs.commit_sha }}
 
       - name: Generate artifact attestation
-        uses: actions/attest-build-provenance@v3
+        uses: actions/attest-build-provenance@v4
         with:
           subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME}}
           subject-digest: ${{ steps.push.outputs.digest }}