Revert "Use ubuntu 20.04 for release builds (#12202)" (#12220)

The underlying issue has now been addressed in:
  #12214

This reverts commit 4b3b37d.

Signed-off-by: Matt Lord <mattalord@gmail.com>

.github/workflows/create_release.yml

@@ -10,12 +10,7 @@ on:
 jobs:
   build:
     name: Create Release
-    # Use the oldest supported Ubuntu release for vtorc as that uses
-    # sqlite and the library dynamically links in glibc with versioned
-    # symbols. Older libc symbols will allow the vtorc binary we build
-    # to be usable on a wider array of Linux distros. For more
-    # details see: https://github.com/vitessio/vitess/issues/12185
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
 
     - name: Set up Go