Bump actions/checkout from 3.0.2 to 3.1.0

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](actions/checkout@2541b12...93ea575)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/release.yaml

@@ -24,7 +24,7 @@ jobs:
  echo ::set-output name=tag::${TAG}
 
  - name: checkout envoy
- uses: actions/checkout@2541b1294d2704b0964813337f33b291d3f8596b
+ uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8
  with:
  repository: envoyproxy/envoy
  ref: ${{ steps.tagName.outputs.tag }}
@@ -55,7 +55,7 @@ jobs:
  DOCKER_CLI_EXPERIMENTAL: "enabled"
  steps:
  - name: Checkout
- uses: actions/checkout@2541b1294d2704b0964813337f33b291d3f8596b
+ uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8
 
  - name: Set up Go
  uses: actions/setup-go@268d8c0ca0432bb2cf416faae41297df9d262d7f