docs: add skip bumpping if statement to README

Author: Lee-W

README.md

@@ -19,6 +19,7 @@ on:
 
 jobs:
   bump_version:
+    if: "!startsWith(github.event.head_commit.message, 'bump:')"
     runs-on: ubuntu-latest
     name: "Bump version and create changelog with commitizen"
     steps: