Pin every action to latest SHA (#10779)

Co-authored-by: Eric Bailey <git@esb.lol>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

package.json

@@ -90,7 +90,8 @@
     "generate-webpack-stats-file": "EXPO_PUBLIC_GENERATE_STATS=1 pnpm build-web",
     "open-analyzer": "EXPO_PUBLIC_OPEN_ANALYZER=1 pnpm build-web",
     "icons:optimize": "svgo -f ./assets/icons",
-    "prettier": "prettier --check ."
+    "prettier": "prettier --check .",
+    "update-actions": "pnpm dlx actions-up --min-age 7"
   },
   "dependencies": {
     "@atproto/api": "0.20.15",