Drop dtolnay/rust-toolchain@stable action; it's already part of the image

Author: RagnarGrootKoerkamp

.github/workflows/check_stubs.yaml

@@ -25,17 +25,13 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
-
-      - uses: dtolnay/rust-toolchain@stable
-
       - uses: Swatinem/rust-cache@v2
-
       - name: Install uv
-        uses: astral-sh/setup-uv@bd01e18f51369d5a26f1651c3cb451d3417e3bba  # v6.3.1
+        uses: astral-sh/setup-uv@bd01e18f51369d5a26f1651c3cb451d3417e3bba # v6.3.1
         with:
           version: "${{ env.UV_VERSION }}"
           python-version: "${{ env.PYTHON_VERSION }}"
-          enable-cache: 'true'
+          enable-cache: "true"
           cache-suffix: "${{ env.PYTHON_VERSION }}"
 
       - name: Use portable config

.github/workflows/publish_pypi.yaml

@@ -32,11 +32,6 @@ jobs:
       - name: Install build dependencies
         run: pip install "packaging>=24.2"
 
-      - name: Install Rust
-        uses: dtolnay/rust-toolchain@stable
-        with:
-          targets: ${{ matrix.target }}
-
       - name: Initialize portable config
         run: mv .cargo/config-portable.toml .cargo/config.toml
 

.github/workflows/test.yaml

@@ -18,7 +18,6 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v6
-      - uses: dtolnay/rust-toolchain@stable
       - uses: Swatinem/rust-cache@v2
       - name: Use portable config
         run: mv .cargo/config-portable.toml .cargo/config.toml