bump(spanner): 88030b07 → f855a3c5 (#3566)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

.claude-plugin/marketplace.json

@@ -2988,7 +2988,7 @@
       "source": {
         "source": "url",
         "url": "https://github.com/gemini-cli-extensions/spanner.git",
-        "sha": "88030b07ba0d39475ff22e3d410b92fa543d0b67"
+        "sha": "f855a3c5eebfe542c6ca11e77fb25189730b23d6"
       },
       "homepage": "https://github.com/gemini-cli-extensions/spanner"
     },