Bump actions/checkout from 3.0.2 to 3.1.0 (#1460)

Bumps [actions/checkout](https://github.com/actions/checkout) from 3.0.2 to 3.1.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](2541b1294d...93ea575cb5)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

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

.github/workflows/beta.yml

@@ -26,7 +26,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
     steps:
-      - uses: actions/checkout@2541b1294d2704b0964813337f33b291d3f8596b
+      - uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8
       - uses: actions/setup-java@a18c333f3f14249953dab3e186e5e21bf3390f1d
         with:
           distribution: 'zulu'
@@ -41,7 +41,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.repository == 'flutter/samples'
     steps:
-      - uses: actions/checkout@2541b1294d2704b0964813337f33b291d3f8596b
+      - uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8
       - uses: actions/setup-java@a18c333f3f14249953dab3e186e5e21bf3390f1d
         with:
           distribution: 'zulu'
@@ -56,7 +56,7 @@ jobs:
     runs-on: macos-latest
     if: github.repository == 'flutter/samples'
     steps:
-      - uses: actions/checkout@2541b1294d2704b0964813337f33b291d3f8596b
+      - uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8
       - uses: actions/setup-java@a18c333f3f14249953dab3e186e5e21bf3390f1d
         with:
           distribution: 'zulu'