Bump actions/upload-artifact from 4.5.0 to 4.6.0 in the actions group

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


Updates `actions/upload-artifact` from 4.5.0 to 4.6.0
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@6f51ac0...65c4c4a)

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

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

.github/workflows/source-and-docs-release.yml

@@ -105,7 +105,7 @@ jobs:
           python ../release.py --export "$CPYTHON_RELEASE" --skip-docs
 
       - name: "Upload the source artifacts"
-        uses: actions/upload-artifact@6f51ac03b9356f520e9adb1b1b7802705f340c2b # v4.5.0
+        uses: actions/upload-artifact@65c4c4a1ddee5b72f698fdd19549f0f0fb45cf08 # v4.6.0
         with:
           name: source
           path: |
@@ -148,7 +148,7 @@ jobs:
           SPHINXOPTS="-j10" make dist
 
       - name: "Upload the docs artifacts"
-        uses: actions/upload-artifact@6f51ac03b9356f520e9adb1b1b7802705f340c2b # v4.5.0
+        uses: actions/upload-artifact@65c4c4a1ddee5b72f698fdd19549f0f0fb45cf08 # v4.6.0
         with:
           name: docs
           path: |