Update dependency wpackagist-plugin/activitypub to v2

See merge request !347

Wpgancio

See merge request !345

Update dependency johnpbloch/wordpress to v6.4.2

See merge request !344

Update dependency wpackagist-plugin/pubsubhubbub to v3.1.4

See merge request !340

Update dependency wpackagist-plugin/activitypub to v1.3.0

See merge request !343

Update dependency wpackagist-plugin/unconfirmed to v1.3.7

See merge request !342

Update dependency wpackagist-plugin/wp-syntax to v1.2

See merge request !341

Update dependency wpackagist-plugin/activitypub to v1.2.0

See merge request !339

Update dependency wpackagist-plugin/disable-remove-google-fonts to v1.5.7

See merge request !284

Update dependency noblogs/wp-mat to v0.1.4

See merge request !338

This reverts commit 524d28fd.

These interfere with JSON-LD activitypub requests because
apparently the '; profile="..."' part is matched by that humongous
rule 920600 regexp and ModSecurity thinks it's a charset.

Attempts to fix the content negotiation caching issue #134.

Update dependency johnpbloch/wordpress to v6.4.1

See merge request !337

Apparently gotosocial uses it for profile discovery.