Bump actions/checkout from v2.3.1 to v2.3.2 (#1)

Bumps [actions/checkout](https://github.com/actions/checkout) from v2.3.1 to v2.3.2.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v2.3.1...2036a08e25fa78bbd946711a407b529a0a1204bf)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/build.yml

@@ -27,7 +27,7 @@ jobs:
         shell: bash
 
       - name: Checkout the "hidden" branch
-        uses: actions/checkout@v2.3.1
+        uses: actions/checkout@v2.3.2
         with:
           ref: hidden