chore(deps): update actions/checkout requirement to v2.3.2 (#231)

Updates the requirements on [actions/checkout](https://github.com/actions/checkout) to permit the latest version.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/commits/2036a08e25fa78bbd946711a407b529a0a1204bf)

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

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

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
         node-version: [10.x, 12.x]
 
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2.3.2
     - name: Use Node.js ${{ matrix.node-version }}
       uses: actions/setup-node@v1
       with:

.github/workflows/codeql-analysis.yml

@@ -13,7 +13,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v2.3.2
       with:
         # We must fetch at least the immediate parents so that if this is
         # a pull request then we can checkout the head.