autogen.sh: update to match updated common submodule

Unbreaks the autotools build and fixes #15.
6 jobs for update-autogen-sh-for-updated-common-submodule in 27 minutes and 22 seconds (queued for 1 second)
Status Job ID Name Coverage
  Preparation
passed #70729
gst indent

00:00:21

passed #70728
manifest

00:00:23

 
  Build
passed #70730
build fedora x86_64

00:04:45

 
  Test
passed #70731
check fedora

00:14:36

 
  Full Builds
passed #70732
build android arm64 api28

00:03:51

passed #70733
build cerbero fedora x86_64

00:07:36