build(deps): bump Swatinem/rust-cache from 2.2.1 to 2.7.3

Bumps [Swatinem/rust-cache](https://github.com/swatinem/rust-cache) from 2.2.1 to 2.7.3.
- [Release notes](https://github.com/swatinem/rust-cache/releases)
- [Changelog](https://github.com/Swatinem/rust-cache/blob/master/CHANGELOG.md)
- [Commits](https://github.com/swatinem/rust-cache/compare/v2.2.1...v2.7.3)

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/code_coverage.yml

@@ -24,7 +24,7 @@ jobs:
             profile: minimal
             components: llvm-tools-preview
       - name: Rust Cache
-        uses: Swatinem/rust-cache@v2.2.1
+        uses: Swatinem/rust-cache@v2.7.3
       - name: Install grcov
         run: if [[ ! -e ~/.cargo/bin/grcov ]]; then cargo install grcov; fi
         # TODO: re-enable the hwi tests

.github/workflows/cont_integration.yml

@@ -26,7 +26,7 @@ jobs:
             override: true
             profile: minimal
       - name: Rust Cache
-        uses: Swatinem/rust-cache@v2.2.1
+        uses: Swatinem/rust-cache@v2.7.3
       - name: Pin dependencies for MSRV
         if: matrix.rust.version == '1.63.0'
         run: |
@@ -52,7 +52,7 @@ jobs:
           profile: minimal
           # target: "thumbv6m-none-eabi"
       - name: Rust Cache
-        uses: Swatinem/rust-cache@v2.2.1
+        uses: Swatinem/rust-cache@v2.7.3
       - name: Check bdk_chain
         working-directory: ./crates/chain
         # TODO "--target thumbv6m-none-eabi" should work but currently does not
@@ -87,7 +87,7 @@ jobs:
             profile: minimal
             target: "wasm32-unknown-unknown"
       - name: Rust Cache
-        uses: Swatinem/rust-cache@v2.2.1
+        uses: Swatinem/rust-cache@v2.7.3
       - name: Check bdk
         working-directory: ./crates/bdk
         run: cargo check --target wasm32-unknown-unknown --no-default-features --features bitcoin/no-std,miniscript/no-std,bdk_chain/hashbrown,dev-getrandom-wasm
@@ -121,7 +121,7 @@ jobs:
             components: clippy
             override: true
       - name: Rust Cache
-        uses: Swatinem/rust-cache@v2.2.1
+        uses: Swatinem/rust-cache@v2.7.3
       - uses: actions-rs/clippy-check@v1
         with:
           token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/nightly_docs.yml

@@ -16,7 +16,7 @@ jobs:
       - name: Update toolchain
         run: rustup update
       - name: Rust Cache
-        uses: Swatinem/rust-cache@v2.2.1
+        uses: Swatinem/rust-cache@v2.7.3
       - name: Build docs
         run: cargo doc --no-deps
         env: