feat: add repository_dispatch trigger for cross-repo CI

Author: srpatcha

.github/workflows/ci.yml

@@ -1,6 +1,8 @@
 name: CI
 
 on:
+  repository_dispatch:
+    types: [dependency-update]
   push:
     branches: [master]
   pull_request:
@@ -50,6 +52,8 @@ jobs:
   # Integration tests — checks out eos + eboot alongside ebuild
   # ────────────────────────────────────────────────────────────
   integration:
+  repository_dispatch:
+    types: [dependency-update]
     name: Integration (${{ matrix.os }} / Python ${{ matrix.python }})
     runs-on: ${{ matrix.os }}
     strategy: