ci: only trigger on sp1-programs tag (#471)

Author: gjermundgaraba

.github/workflows/release.yml

@@ -7,6 +7,7 @@ on:
 jobs:
   release-sp1-programs:
     runs-on: depot-ubuntu-22.04-4
+    if: startsWith(github.ref_name, 'sp1-programs-')
     steps:
       - uses: actions/checkout@v4
       - name: Set up Rust