fix: update rust-cache usage to the post 2.0.0 parameter key "workspaces" instead of "workdir"

Author: 56kyle

{{cookiecutter.project_name}}/.github/workflows/build-rust.yml

@@ -57,7 +57,7 @@ jobs:
       - name: Cache Rust dependencies
         uses: Swatinem/rust-cache@v2
         with:
-          workdir: rust/
+          workspaces: "rust/"
           key: {{ "${{ matrix.platform.target }}" }}
 
       - name: Set up cross-compilation toolchain (Linux)

{{cookiecutter.project_name}}/.github/workflows/lint-rust.yml

@@ -36,7 +36,7 @@ jobs:
       - name: Cache Rust dependencies
         uses: Swatinem/rust-cache@v2
         with:
-          workdir: rust/
+          workspaces: "rust/"
 
       - name: Set up uv
         uses: astral-sh/setup-uv@v6

{{cookiecutter.project_name}}/.github/workflows/test-rust.yml

@@ -40,7 +40,7 @@ jobs:
       - name: Cache Rust dependencies
         uses: Swatinem/rust-cache@v2
         with:
-          workdir: rust/
+          workspaces: "rust/"
 
       - name: Set up uv
         uses: astral-sh/setup-uv@v6