Update actions/upload-artifact digest to 8448086

Author: renovate[bot]

.github/workflows/build.yml

@@ -66,15 +66,15 @@ jobs:
           target: CI
           cake-version: tool-manifest
       - name: Upload Issues
-        uses: actions/upload-artifact@834a144ee995460fba8ed112a2fc961b36a5ec5a # v4
+        uses: actions/upload-artifact@84480863f228bb9747b473957fcc9e309aa96097 # v4
         with:
           if-no-files-found: warn
           name: ${{ matrix.os }} Issues
           path: |
             BuildArtifacts/report.html
             BuildArtifacts/**/coverlet/*.xml
       - name: Upload Packages
-        uses: actions/upload-artifact@834a144ee995460fba8ed112a2fc961b36a5ec5a # v4
+        uses: actions/upload-artifact@84480863f228bb9747b473957fcc9e309aa96097 # v4
         if: runner.os == 'Windows'
         with:
           if-no-files-found: warn