Meson: update wrap versions

Marking as draft for now: we'll need freetype/freetype!11 (closed) fixed in order to move to the upstream freetype meson port (but can always drop that commit for now and revisit it later if needed).

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commit 66dba189:

meson: subprojects: update expat wrap to latest version

commit 38157573:

meson: subprojects: update glib wrap to latest stable 2.66.7

commit a4b8928e:

meson: subprojects: update zlib wrap to latest revision 1.2.11-5

commit 387871c4:

meson: subprojects: use upstream freetype meson port
Closes #416

commit 85fdb07e:

ci: make sure existing subproject checkouts are in sync with wraps