Bump the github-actions group with 2 updates (#959)

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


Updates `actions/download-artifact` from 4.1.9 to 4.2.1
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@cc20338...95815c3)

Updates `actions/upload-artifact` from 4.6.1 to 4.6.2
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@4cec3d8...ea165f8)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: 4.2.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: github-actions
- dependency-name: actions/upload-artifact
  dependency-version: 4.6.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: github-actions
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/conformance.yml

@@ -37,7 +37,7 @@ jobs:
         - name: Download Reference Exec Summary
           if: github.ref != 'refs/heads/main'
           continue-on-error: true
-          uses: actions/download-artifact@cc203385981b70ca67e1cc392babf9cc229d5806
+          uses: actions/download-artifact@95815c38cf2ff2164869cbab79da8d1f422bc89e
           with:
             name: reference_exec_summary
 
@@ -49,7 +49,7 @@ jobs:
 
         - name: Upload Reference Summary iff on main branch
           if: github.ref == 'refs/heads/main'
-          uses: actions/upload-artifact@4cec3d8aa04e39d1a68397de0c4cd6fb9dce8ec1
+          uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02
           with:
             name: reference_exec_summary
             path: conformance/TEMP_DATA/testReports/exec_summary.json

.github/workflows/intl4x_artifacts.yml

@@ -153,7 +153,7 @@ jobs:
         cp target/x86_64-pc-windows-msvc/release/icu4x-datagen.exe bin/windows_x64-datagen.exe
     
     - name: Upload artifacts
-      uses: actions/upload-artifact@4cec3d8aa04e39d1a68397de0c4cd6fb9dce8ec1
+      uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02
       with:
         name: dart-${{matrix.os}}-${{ matrix.compiletype }}-libs
         path: submodules/icu4x/bin
@@ -172,7 +172,7 @@ jobs:
           submodules: true
 
       - name: Download binaries
-        uses: actions/download-artifact@cc203385981b70ca67e1cc392babf9cc229d5806
+        uses: actions/download-artifact@95815c38cf2ff2164869cbab79da8d1f422bc89e
         with:
           merge-multiple: true
 
@@ -196,7 +196,7 @@ jobs:
     if: github.event_name == 'push'
     steps:
       - name: Download binaries
-        uses: actions/download-artifact@cc203385981b70ca67e1cc392babf9cc229d5806
+        uses: actions/download-artifact@95815c38cf2ff2164869cbab79da8d1f422bc89e
 
       - name: Display structure of downloaded files
         run: ls -R