Fix publish-release for Theia (#1627)

Author: tortmayr

.github/workflows/publish-release.yml

@@ -43,7 +43,7 @@ on:
 
 jobs:
   publish:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     steps:
       - name: Checkout release repo (${{ inputs.release_repo || github.event.inputs.release_repo }})
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
@@ -53,6 +53,12 @@ jobs:
           ref: ${{ inputs.branch || github.event.inputs.branch }}
           fetch-depth: 0
 
+      - name: Set up Python
+        if: inputs.release_repo == 'glsp-theia-integration'
+        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+        with:
+          python-version: '3.11'
+
       - name: Configure Git
         run: |
           git config --global user.name "github-actions[bot]"