Merge branch 'ci' into 'master'

ci: bump msys2 deps, fix broken links

See merge request !201
11 jobs for master in 11 minutes and 33 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #6628666
build:cmake

00:06:04

passed #6628663
build:debug

00:10:56

manual #6628668
allowed to fail manual
build:i686-w64-mingw32-cmake
passed #6628667
build:i686-w64-mingw32-debug

00:08:00

manual #6628665
allowed to fail manual
build:legacy
passed #6628662
build:production

00:06:47

manual #6628664
allowed to fail manual
build:reduced
manual #6628671
allowed to fail manual
build:stretch
passed #6628669
build:x86_64-w64-mingw32

00:07:35

passed #6628670
build:x86_64-w64-mingw32-cmake-debug

00:11:30

manual #6628672
allowed to fail manual
build:xenial