Merge pull request #201 from flubshi/matrix_fix_workflow

Backport: Fix release workflow

.github/workflows/release.yml

@@ -23,6 +23,7 @@ jobs:
       # - libxml2-utils, xmlstarlet: reading news and version from addon.xml.in
       - name: Install dependencies
         run: |
+          sudo apt-get update
           sudo apt-get install libxml2-utils xmlstarlet
 
       # Create the variables required by the following steps