fix: Correct release workflow trigger and version extraction

This commit addresses two issues in the release workflow:

1.  The tag trigger has been reverted to only accept tags matching the `v*.*.*` pattern, as requested by the user.
2.  The `grep` command used to extract the version number from `version.json` has been made more robust to prevent errors during the workflow run.

.github/workflows/release.yml

@@ -4,7 +4,6 @@ on:
   push:
     tags:
       - 'v*.*.*'
-      - '*.*.*'
 
 jobs:
   release:
@@ -50,7 +49,7 @@ jobs:
       - name: Get version
         id: get_version
         run: |
-          VERSION=$(grep -o '"version": "[^"]*"' version.json | grep -o '[^"]*$')
+          VERSION=$(grep -oP '(?<="version": ")[^"]*' version.json)
           echo "VERSION=$VERSION" >> $GITHUB_ENV
 
       - name: Build release package