ci: fix dependency setup

Author: kanru

.github/workflows/ci.yml

@@ -12,10 +12,6 @@ on:
   merge_group:
     types: [checks_requested]
 
-env:
-  RUST_VERSION: "1.88"
-  CMAKE_GENERATOR: Ninja
-
 jobs:
   build:
     runs-on: ubuntu-latest
@@ -26,11 +22,8 @@ jobs:
 
       - name: Setup dependencies
         run: |
-          sudo apt-get install ninja-build
           rustup set auto-self-update disable
-          rustup install ${{ env.RUST_VERSION }}
-          rustup default ${{ env.RUST_VERSION }}
-          cargo install --bin chewing-cli https://github.com/chewing/libchewing
+          cargo install chewing-cli --git https://github.com/chewing/libchewing
 
       - name: Build
         run: |