chore(deps): update actions/upload-artifact digest to 4cec3d8

Author: renovate[bot]

.github/workflows/flex-build.yml

@@ -85,7 +85,7 @@ jobs:
 
  - if: inputs.upload
  name: Upload artifacts
- uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4
+ uses: actions/upload-artifact@4cec3d8aa04e39d1a68397de0c4cd6fb9dce8ec1 # v4
  with:
  name: jars-${{ inputs.mc || inputs.dir }}${{ inputs.dir == 'gametest' && '-gametest' || '' }}
  path: ${{ inputs.dir }}/build/libs/*.jar

.github/workflows/run-gametests.yml

@@ -26,7 +26,7 @@ jobs: # TODO: add cleanup job
  runs-on: blacksmith-2vcpu-ubuntu-2204
  steps:
  - name: Merge artifacts
- uses: actions/upload-artifact/merge@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4
+ uses: actions/upload-artifact/merge@4cec3d8aa04e39d1a68397de0c4cd6fb9dce8ec1 # v4
  with:
  delete-merged: true