Bump the github group across 1 directory with 2 updates

Bumps the github group with 2 updates in the / directory: [actions/checkout](https://github.com/actions/checkout) and [actions/upload-artifact](https://github.com/actions/upload-artifact).


Updates `actions/checkout` from 4.1.7 to 4.2.1
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@692973e...eef6144)

Updates `actions/upload-artifact` from 4.4.0 to 4.4.2
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@5076954...8448086)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: github
- dependency-name: actions/upload-artifact
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: github
...

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

.github/workflows/ci.yml

@@ -22,7 +22,7 @@ jobs:
         os: [macos-latest, ubuntu-latest, windows-latest]
 
     steps:
-      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
+      - uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1
       - uses: gradle/wrapper-validation-action@f9c9c575b8b21b6485636a91ffecd10e558c62f6 # v3.5.0
 
       - name: Set up JDK ${{ matrix.java }}
@@ -41,7 +41,7 @@ jobs:
       contents: read
       checks: write
     steps:
-      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
+      - uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1
 
       - name: Set up JDK 17
         uses: actions/setup-java@b36c23c0d998641eff861008f374ee103c25ac73 # v4.4.0
@@ -58,13 +58,13 @@ jobs:
         run: ./gradlew clean build -Plog-tests
 
       - name: Upload built plain markdown test docs
-        uses: actions/upload-artifact@50769540e7f4bd5e21e526ee35c689e35e0d6874 # v4.4.0
+        uses: actions/upload-artifact@84480863f228bb9747b473957fcc9e309aa96097 # v4.4.2
         with:
           name: plain-markdown-docs
           path: smithy-docgen-test/build/smithyprojections/smithy-docgen-test/plain-markdown/docgen
 
       - name: Upload built sphinx markdown test docs
-        uses: actions/upload-artifact@50769540e7f4bd5e21e526ee35c689e35e0d6874 # v4.4.0
+        uses: actions/upload-artifact@84480863f228bb9747b473957fcc9e309aa96097 # v4.4.2
         with:
           name: sphinx-markdown-docs
           path: |