Updated github CI actions for ubuntu 20.04

Updated github CI actions for ubuntu 20.04

Squash of:
commit 6b7d305e776dcec2103b9e4486f3c57c674d046f
Author: Dan Brown <redacted>
Date:   Sun Mar 7 16:25:43 2021 +0000

    Updated migrations action and added ldap

commit 139d87687d3d4d6c2368adb522932469419c848a
Author: Dan Brown <redacted>
Date:   Sun Mar 7 16:18:55 2021 +0000

    Updated mysql user auth

commit 326d11e0d3b96bfb2e6ba446ada9cee479d3eb1a
Author: Dan Brown <redacted>
Date:   Sun Mar 7 16:15:33 2021 +0000

    Moved extensions to right place

commit aaa1e159ccbf535292615e094bb58ce6488726df
Author: Dan Brown <redacted>
Date:   Sun Mar 7 16:13:22 2021 +0000

    Added php extensions

commit 3720324288c974d825ff2a63306a5fbf1c0478ab
Author: Dan Brown <redacted>
Date:   Sun Mar 7 16:07:37 2021 +0000

    Update gh ci branches list for testing

commit 4e3a302a5a4480b45d967f398abbe33883b6d0fb
Author: Dan Brown <redacted>
Date:   Sun Mar 7 16:06:19 2021 +0000

    Updated github ci to use ubuntu 20.04