Bump actions/checkout from 2 to 4

Bumps [actions/checkout](https:/actions/checkout) from 2 to 4.
- [Release notes](https:/actions/checkout/releases)
- [Changelog](https:/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2...v4)

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

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

.github/workflows/code-coverage.yml

@@ -8,7 +8,7 @@ jobs:
  build:
  runs-on: ubuntu-latest
  steps:
- - uses: actions/checkout@v2
+ - uses: actions/checkout@v4
  - name: Install modules
  run: yarn install --frozen-lockfile
  - name: Copy .env file

.github/workflows/codeql-analysis.yml

@@ -30,7 +30,7 @@ jobs:
 
  steps:
  - name: Checkout repository
- uses: actions/checkout@v2
+ uses: actions/checkout@v4
  with:
  # We must fetch at least the immediate parents so that if this is
  # a pull request then we can checkout the head.

.github/workflows/lint.yml

@@ -8,7 +8,7 @@ jobs:
  runs-on: ubuntu-latest
  steps:
  - name: Checkout
- uses: actions/checkout@v2
+ uses: actions/checkout@v4
 
  # ~~~ CACHING ~~~
  # The following is just to do caching of yarn and eslint, it's not necessary to get linting to work

.github/workflows/run-tests.yml

@@ -8,7 +8,7 @@ jobs:
  build:
  runs-on: ubuntu-latest
  steps:
- - uses: actions/checkout@v2
+ - uses: actions/checkout@v4
  - name: Install modules
  run: yarn install --frozen-lockfile
  - name: Copy .env file