Use specific Ubuntu version in build script

.github/workflows/canary.yml

@@ -202,7 +202,7 @@ jobs:
 
   macos_release:
     name: Release MacOS universal
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v4
 

.github/workflows/release.yml

@@ -183,7 +183,7 @@ jobs:
 
   macos_release:
     name: Release MacOS universal
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v4