Bump actions/upload-artifact from 4.4.2 to 4.4.3 in the github group

Bumps the github group with 1 update: [actions/upload-artifact](https://github.com/actions/upload-artifact).


Updates `actions/upload-artifact` from 4.4.2 to 4.4.3
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@8448086...b4b15b8)

---
updated-dependencies:
- 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

@@ -58,13 +58,13 @@ jobs:
  run: ./gradlew clean build -Plog-tests
 
  - name: Upload built plain markdown test docs
- uses: actions/upload-artifact@84480863f228bb9747b473957fcc9e309aa96097 # v4.4.2
+ uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4.4.3
  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@84480863f228bb9747b473957fcc9e309aa96097 # v4.4.2
+ uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4.4.3
  with:
  name: sphinx-markdown-docs
  path: |