Revert "Temporarily disable non-windows runners on github actions."

This reverts commit 0937685.

Author: arobenko

.github/workflows/actions_build.yml

@@ -5,7 +5,6 @@ on: [push]
 jobs:
 
   build_gcc_ubuntu_22_04:
-    if: false
     runs-on: ubuntu-22.04
     strategy:
       fail-fast: false
@@ -45,7 +44,6 @@ jobs:
         VERBOSE: 1         
 
   build_clang_ubuntu_22_04:
-    if: false
     runs-on: ubuntu-22.04
     strategy:
       fail-fast: false