build: reduce cosign to a minimum

.github/workflows/deploy.yml

@@ -53,21 +53,7 @@ jobs:
 
       - name: Sign PHAR file using Cosign
         run: |
-          INDEX=$(cosign sign-blob --yes --output-signature n98-magerun2.phar.sig n98-magerun2.phar | grep -oP "tlog entry created with index: \K[0-9]+")
-          if [ -z "$INDEX" ]; then
-            echo "Error: Transparency Log Entry Index not found!" >&2
-            exit 1
-          fi
-          echo "Transparency Log Entry Index: $INDEX"
-          echo "REKOR_ENTRY_INDEX=$INDEX" >> $GITHUB_ENV
-
-      - name: Display Rekor Transparency Log URL
-        run: |
-          echo "Rekor Transparency Log Entry: https://rekor.sigstore.dev/api/v1/log/entries/$REKOR_ENTRY_INDEX"
-
-      - name: Create Rekor Annotation
-        run: |
-          echo "::notice file=n98-magerun2.phar::Rekor Transparency Log Entry: https://rekor.sigstore.dev/api/v1/log/entries/$REKOR_ENTRY_INDEX"
+          cosign sign-blob --yes --output-signature n98-magerun2.phar.sig n98-magerun2.phar
 
       - name: Import GPG key
         uses: crazy-max/ghaction-import-gpg@v6