Enable merge queue (#616)

* Enable merge queue

* ensure msrv and semver checks pass

.github/workflows/rust.yml

@@ -2,9 +2,11 @@ name: Rust
 
 on:
   push:
-    branches: ["**"]
+    branches: [master]
   pull_request:
     branches: ["**"]
+  merge_group:
+    types: [checks_requested]
 
 env:
   CARGO_TERM_COLOR: always
@@ -39,10 +41,12 @@ jobs:
     - name: Run tests
       run: cargo test --verbose
   build_result:
-    name: homu build finished
+    name: Result
     runs-on: ubuntu-latest
     needs:
       - "build"
+      - "msrv"
+      - "semver"
     steps:
       - name: Mark the job as successful
         run: exit 0