github-actions: bump actions/checkout from 3 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...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/build.yml

@@ -64,7 +64,7 @@ jobs:
             gcc_extract_dir: gcc-arm-none-eabi-10.3-2021.10
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: true
 

.github/workflows/checks.yml

@@ -45,7 +45,7 @@ jobs:
   pretty:
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: true
     - name: Bootstrap
@@ -61,7 +61,7 @@ jobs:
   markdown-link-check:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: gaurav-nelson/github-action-markdown-link-check@v1
       with:
         use-verbose-mode: 'yes'

.github/workflows/docker.yml

@@ -58,7 +58,7 @@ jobs:
       with:
         egress-policy: audit # TODO: change to 'egress-policy: block' after couple of runs
 
-    - uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # v3.3.0
+    - uses: actions/checkout@v4 # v3.3.0
       with:
         submodules: true