chore(gh: tests): try switching base image to measure the time difference for the whole pipeline

Author: actionless

.github/workflows/tests.yml

@@ -22,8 +22,8 @@ jobs:
       with:
         submodules: recursive
 
-    - name: switch base image
-      run: sed -i -e 's|FROM archlinux:base-devel|FROM actionless/pikaur|' Dockerfile
+    #- name: switch base image
+    #  run: sed -i -e 's|FROM archlinux:base-devel|FROM actionless/pikaur|' Dockerfile
 
     - name: run tests in docker
       #run: ./maintenance_scripts/docker_test.sh --coveralls