Update to microG v0.2.19.211515

Description

Sync with upstream

Issue(s)

e/backlog#3161 (closed) e/backlog#2705 (closed) e/backlog#785 (closed)

Test procedures

Test environment

/e/OS with the last microG deployed

Steps

Action	Expected result
Map	Third party apps relying on Google maps should display Mapbox
Notification	Third party apps relying on GCM notification should work
Location	Network based location should work
microG EN easy install	With microG noen, by tapping on Exposure notifications, the user should arrive on the Apps microG EN download page
microG EN	Third party app should work

Technical details

Screenshots

Check list

• Self review
• Test procedure explained
• Tested on fresh install
• Tested applied as an update
• License
• Internal documentation
• User documentation

/cc @larma