fix: update CI workflow to use Gitea Actions compatible syntax

.gitea/workflows/ci.yml

@@ -12,17 +12,13 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Install Rust
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
-          profile: minimal
-          override: true
+      - name: Set up Rust
+        run: |
+          rustup install stable
+          rustup default stable
 
       - name: Install dependencies
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y libgit2-dev pkg-config
+        run: sudo apt-get update && sudo apt-get install -y libgit2-dev pkg-config
 
       - name: Build project
         run: cargo build --release
@@ -35,35 +31,26 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Install Rust
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
-          profile: minimal
-          override: true
+      - name: Set up Rust
+        run: |
+          rustup install stable
+          rustup default stable
 
       - name: Install dependencies
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y libgit2-dev pkg-config
+        run: sudo apt-get update && sudo apt-get install -y libgit2-dev pkg-config
 
       - name: Run clippy
-        uses: actions-rs/cargo@v1
-        with:
-          command: clippy
-          args: --all-features -- -D warnings
+        run: cargo clippy --all-features -- -D warnings
 
   format:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
 
-      - name: Install Rust
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
-          profile: minimal
-          override: true
+      - name: Set up Rust
+        run: |
+          rustup install stable
+          rustup default stable
 
       - name: Check formatting
         run: cargo fmt --all -- --check