Bump swatinem/rust-cache from 1 to 2

Bumps [swatinem/rust-cache](https://github.com/swatinem/rust-cache) from 1 to 2.
- [Release notes](https://github.com/swatinem/rust-cache/releases)
- [Changelog](https://github.com/Swatinem/rust-cache/blob/master/CHANGELOG.md)
- [Commits](Swatinem/rust-cache@v1...v2)

---
updated-dependencies:
- dependency-name: swatinem/rust-cache
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/main.yml

@@ -28,7 +28,7 @@ jobs:
         with:
           toolchain: ${{ matrix.rust }}
           override: true
-      - uses: swatinem/rust-cache@v1
+      - uses: swatinem/rust-cache@v2
       - name: cargo-check
         uses: actions-rs/cargo@v1
         with:
@@ -86,7 +86,7 @@ jobs:
         with:
           toolchain: ${{ matrix.rust }}
           override: true
-      - uses: swatinem/rust-cache@v1
+      - uses: swatinem/rust-cache@v2
       - name: cargo-test
         uses: actions-rs/cargo@v1
         with:
@@ -103,7 +103,7 @@ jobs:
         with:
           toolchain: 1.60.0
           override: true
-      - uses: swatinem/rust-cache@v1
+      - uses: swatinem/rust-cache@v2
       - run: rustup component add clippy
       - name: cargo-clippy
         run: cargo clippy --all --all-targets --all-features