Update actions/upload-artifact digest to 4cec3d8 (#78)

Co-authored-by: elastic-renovate-prod[bot] <174716857+elastic-renovate-prod[bot]@users.noreply.github.com>

Author: elastic-renovate-prod[bot]

.github/workflows/Build.yaml

@@ -20,7 +20,7 @@ jobs:
         go-version: '^1.20' # The Go version to download (if necessary) and use.
     - name: build go module
       run: make && zip --junk-paths k6.zip k6
-    - uses: actions/upload-artifact@65c4c4a1ddee5b72f698fdd19549f0f0fb45cf08 # v4
+    - uses: actions/upload-artifact@4cec3d8aa04e39d1a68397de0c4cd6fb9dce8ec1 # v4
       with:
         name: k6.zip
         path: k6.zip