Auto merge of #4609 - rust-lang:renovate/actions-checkout-3.x, r=Turbo87

Update actions/checkout action to v3

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [actions/checkout](https://togithub.com/actions/checkout) | action | major | `v2` -> `v3` |

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### Release Notes

<details>
<summary>actions/checkout</summary>

### [`v3`](https://togithub.com/actions/checkout/compare/v2...v3)

[Compare Source](https://togithub.com/actions/checkout/compare/v2...v3)

</details>

---

### Configuration

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🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

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

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, click this checkbox.

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Author: bors

.github/workflows/ci.yml

@@ -26,7 +26,7 @@ jobs:
       PERCY_PROJECT: crates-io/crates.io
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3.0.0
       - uses: volta-cli/action@v1
 
       - name: Install node modules
@@ -54,7 +54,7 @@ jobs:
       RUSTFLAGS: "-D warnings"
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3.0.0
 
       - run: rustup default ${{ env.RUST_VERSION }}
       - run: rustup component add rustfmt
@@ -98,7 +98,7 @@ jobs:
           - 5432:5432
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3.0.0
 
       - name: Install ${{ env.RUST_VERSION }} Rust
         if: matrix.rust == 'stable'

.github/workflows/coverage.yml

@@ -38,7 +38,7 @@ jobs:
           - 5432:5432
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3.0.0
 
       # Set up Rust
       - run: rustup default ${{ env.RUST_VERSION }}