Fix release action for new pip contraint

.github/workflows/release.yml

@@ -13,7 +13,7 @@ jobs:
             sudo apt-get update
             sudo apt-get install -y ninja-build libcunit1-dev python3-pip
             # Install meson as root so we can install to the system below.
-            sudo pip install meson
+            sudo pip install meson --break-system-packages
       - name: Build tarball and changelogs
         run: |
           git rm -rf c/tests/meson-subproject