fix: give pypi read permissions in cicd

Author: scottchronicity

.github/workflows/cd-release.yml

@@ -71,6 +71,7 @@ jobs:
       name: pypi
       url: https://pypi.org/p/ephemeris-mcp
     permissions:
+      contents: read
       id-token: write
     steps:
       - uses: actions/checkout@v4