ci(deps): bump actions/checkout from 6 to 7

Bumps [actions/checkout](https://github.com/actions/checkout) from 6 to 7.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v6...v7)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5d90d9c..1ebfa53 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,7 +17,7 @@
     name: Presubmit Checks
     runs-on: openprot-ci-runner
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
 
     - name: Setup Bazel
       uses: bazel-contrib/setup-bazel@0.19.0
@@ -37,7 +37,7 @@
     needs: presubmit
     runs-on: openprot-ci-runner
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
 
     - name: Setup Bazel
       uses: bazel-contrib/setup-bazel@0.19.0
@@ -56,7 +56,7 @@
     runs-on: openprot-ci-runner
 
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
 
     - name: Setup Bazel
       uses: bazel-contrib/setup-bazel@0.19.0
@@ -74,7 +74,7 @@
     needs: presubmit
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
 
     - name: Install Rust toolchain
       uses: dtolnay/rust-toolchain@stable
diff --git a/.github/workflows/github_pages.yml b/.github/workflows/github_pages.yml
index fd0180f..62d8171 100644
--- a/.github/workflows/github_pages.yml
+++ b/.github/workflows/github_pages.yml
@@ -24,7 +24,7 @@
       url: ${{ steps.deployment.outputs.page_url }}
     steps:
     - name: Checkout
-      uses: actions/checkout@v6
+      uses: actions/checkout@v7
 
     - name: Setup Bazel
       uses: bazel-contrib/setup-bazel@0.19.0
diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index 2672ec4..bc38000 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -20,7 +20,7 @@
     if: github.event_name != 'pull_request' || github.event.label.name == 'run-nightly'
 
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
 
     - name: Setup Bazel
       uses: bazel-contrib/setup-bazel@0.19.0
@@ -41,7 +41,7 @@
     needs: nightly-build
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
 
     - name: Setup Bazel
       uses: bazel-contrib/setup-bazel@0.19.0
diff --git a/.github/workflows/roll-pigweed.yml b/.github/workflows/roll-pigweed.yml
index 5f7111a..2310f85 100644
--- a/.github/workflows/roll-pigweed.yml
+++ b/.github/workflows/roll-pigweed.yml
@@ -11,7 +11,7 @@
     runs-on: ubuntu-latest
     steps:
       - name: Checkout the earlgrey-hwe branch
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Set up Python
         uses: actions/setup-python@v6
diff --git a/.github/workflows/sync-main-to-earlgrey-hwe.yml b/.github/workflows/sync-main-to-earlgrey-hwe.yml
index faad815..c019ace 100644
--- a/.github/workflows/sync-main-to-earlgrey-hwe.yml
+++ b/.github/workflows/sync-main-to-earlgrey-hwe.yml
@@ -18,7 +18,7 @@
           private-key: ${{ secrets.SYNCHRONIZE_BOT_PRIVATE_KEY }}
 
       - name: Checkout the main branch
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
         with:
           ref: main
           fetch-depth: 0 # Fetches all history so branches can be compared