add v to tag names, write permission for file upload

Author: zoff99

.github/workflows/nightly.yml

@@ -19,6 +19,8 @@ defaults:
 jobs:
   macos-compile:
     runs-on: macos-12
+    permissions:
+      contents: write
     steps:
     - uses: actions/checkout@v4
 

tools/prepare_new_release_version.sh

@@ -52,4 +52,4 @@ commit_message="v""$next_m_version"
 tag_name="$next_m_version"
 
 git commit -m "$commit_message" "$f1" "$f2"
-git tag -a "$next_m_version" -m "$next_m_version"
+git tag -a "v$next_m_version" -m "v$next_m_version"