ci(deps): update swatinem/rust-cache action to v2.7.0 (#386)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [Swatinem/rust-cache](https://togithub.com/Swatinem/rust-cache) |
action | minor | `v2.6.2` -> `v2.7.0` |

---

### Release Notes

<details>
<summary>Swatinem/rust-cache (Swatinem/rust-cache)</summary>

###
[`v2.7.0`](https://togithub.com/Swatinem/rust-cache/releases/tag/v2.7.0)

[Compare
Source](https://togithub.com/Swatinem/rust-cache/compare/v2.6.2...v2.7.0)

#### What's Changed

- Fix save-if documentation in readme by
[@&#8203;rukai](https://togithub.com/rukai) in
[https://github.com/Swatinem/rust-cache/pull/166](https://togithub.com/Swatinem/rust-cache/pull/166)
- Support for `trybuild` and similar macro testing tools by
[@&#8203;neysofu](https://togithub.com/neysofu) in
[https://github.com/Swatinem/rust-cache/pull/168](https://togithub.com/Swatinem/rust-cache/pull/168)

#### New Contributors

- [@&#8203;rukai](https://togithub.com/rukai) made their first
contribution in
[https://github.com/Swatinem/rust-cache/pull/166](https://togithub.com/Swatinem/rust-cache/pull/166)
- [@&#8203;neysofu](https://togithub.com/neysofu) made their first
contribution in
[https://github.com/Swatinem/rust-cache/pull/168](https://togithub.com/Swatinem/rust-cache/pull/168)

**Full Changelog**:
Swatinem/rust-cache@v2.6.2...v2.7.0

</details>

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Enabled.

♻ **Rebasing**: Whenever PR is behind base branch, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

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.github/workflows/build.yml

@@ -58,7 +58,7 @@ jobs:
         with:
           toolchain: stable
           target: ${{ matrix.target }}
-      - uses: Swatinem/rust-cache@e207df5d269b42b69c8bc5101da26f7d31feddb4 # v2.6.2
+      - uses: Swatinem/rust-cache@a95ba195448af2da9b00fb742d14ffaaf3c21f43 # v2.7.0
         with:
           key: ${{ matrix.target }}
       - name: Install cross