chore(deps): update activitypub to v1.2.2 (#164)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

compose.yml

@@ -100,7 +100,7 @@ services:
       - ghost_network
 
   activitypub:
-    image: ghcr.io/tryghost/activitypub:1.1.0@sha256:39c212fe23603b182d68e67d555c6b9b04b1e57459dfc0bef26d6e4980eb04d1
+    image: ghcr.io/tryghost/activitypub:1.2.2@sha256:128f0d08d872930b4ab37c9fc1fe8042fefd44622316b05f3885bd068be7cc43
     restart: always
     expose:
       - "8080"
@@ -185,7 +185,7 @@ services:
     tty: true
 
   activitypub-migrate:
-    image: ghcr.io/tryghost/activitypub-migrations:1.1.0@sha256:b3ab20f55d66eb79090130ff91b57fe93f8a4254b446c2c7fa4507535f503662
+    image: ghcr.io/tryghost/activitypub-migrations:1.2.2@sha256:2af8a0726ac4362cdcab59c308ed612140478d43011ec8d3475bb2634b96d108
     environment:
       MYSQL_DB: mysql://${DATABASE_USER:-ghost}:${DATABASE_PASSWORD:?DATABASE_PASSWORD environment variable is required}@tcp(db:3306)/activitypub
     networks: