[skip ci]Merge pull request #400 from simvue-io/hotfix/test-other-python-on-rc

[skip ci]Only run other python version checks on tagged release candidate

Author: kzscisoft

.github/workflows/test_multiple_python.yml

@@ -5,9 +5,8 @@ name: Simvue Client (Python Versions)
 
 on:
   push:
-    branches: [ "main", "dev", "hotfix/update-ci" ]
-  pull_request:
-    branches: [ "main", "dev", "hotfix/update-ci" ]
+    tags:
+      - 'v*-*-rc*'
 
 permissions:
   contents: read