ci(release): exclude non-source paths from release-please triggers

Author: zurfjereluhmie

release-please-config.json

@@ -1,6 +1,7 @@
 {
   "$schema": "https://raw.githubusercontent.com/googleapis/release-please/main/schemas/config.json",
   "release-type": "python",
+  "exclude-paths": [".github", "demo", "docs", "tests"],
   "packages": {
     ".": {}
   }