ci: compliance: Use upload-artifact action v3

This commit updates the "Create a release" workflow to use a specific
upload-artifact action version, v3, instead of the latest master branch
in order to prevent any potential breakages due to the newer commits.

Signed-off-by: Stephanos Ioannidis <[email protected]>

Author: stephanosio

.github/workflows/release.yml

@@ -23,7 +23,7 @@ jobs:
           args: spdx -o zephyr-${{ steps.get_version.outputs.VERSION }}.spdx
 
       - name: upload-results
-        uses: actions/upload-artifact@master
+        uses: actions/upload-artifact@v3
         continue-on-error: True
         with:
           name: zephyr-${{ steps.get_version.outputs.VERSION }}.spdx