Update actions/checkout action to v7 (internal-15881)

GitOrigin-RevId: 365b7caec87c215b79311f8351fa788f8f6c1bed

Author: mapbox-renovate[bot]

.github/workflows/ci.yml

@@ -14,7 +14,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v7
     - uses: actions/setup-node@v4
       with:
         node-version-file: '.nvmrc'
@@ -35,7 +35,7 @@ jobs:
     permissions:
       contents: read
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v7
     - uses: actions/setup-node@v4
       with:
         node-version-file: '.nvmrc'
@@ -65,7 +65,7 @@ jobs:
     permissions:
       contents: read
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v7
     - uses: actions/setup-node@v4
       with:
         node-version-file: '.nvmrc'