Bump wagtail from 5.2.6 to 6.3

Bumps [wagtail](https://github.com/wagtail/wagtail) from 5.2.6 to 6.3.
- [Release notes](https://github.com/wagtail/wagtail/releases)
- [Changelog](https://github.com/wagtail/wagtail/blob/main/CHANGELOG.txt)
- [Commits](wagtail/wagtail@v5.2.6...v6.3)

---
updated-dependencies:
- dependency-name: wagtail
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements.in

@@ -24,7 +24,7 @@ pygit2==1.14.0
 python-slugify
 requests
 social-auth-app-django
-wagtail==5.2.6
+wagtail==6.3
 wagtail-ab-testing
 wagtail-color-panel
 wagtail-factories

requirements.txt

@@ -67,6 +67,7 @@ django==4.2.15
     #   django-taggit
     #   django-treebeard
     #   djangorestframework
+    #   laces
     #   social-auth-app-django
     #   wagtail
     #   wagtail-footnotes
@@ -101,7 +102,7 @@ django-redis==5.4.0
     # via -r requirements.in
 django-storages==1.14.4
     # via -r requirements.in
-django-taggit==3.0.0
+django-taggit==6.1.0
     # via wagtail
 django-treebeard==4.5.1
     # via wagtail
@@ -133,8 +134,6 @@ gunicorn==22.0.0
     # via -r requirements.in
 heroku3==5.2.1
     # via -r requirements.in
-html5lib==1.1
-    # via wagtail
 idna==3.7
     # via requests
 jmespath==0.10.0
@@ -143,6 +142,8 @@ jmespath==0.10.0
     #   botocore
 l18n==2021.3
     # via wagtail
+laces==0.1.1
+    # via wagtail
 markdown==3.4.4
     # via django-pattern-library
 numpy==1.24.4
@@ -216,7 +217,6 @@ six==1.16.0
     # via
     #   basket-client
     #   django-autocomplete-light
-    #   html5lib
     #   l18n
     #   python-dateutil
 smmap==5.0.0
@@ -251,7 +251,7 @@ urllib3==1.26.19
     #   sentry-sdk
 user-agents==2.2.0
     # via wagtail-ab-testing
-wagtail==5.2.6
+wagtail==6.3
     # via
     #   -r requirements.in
     #   wagtail-ab-testing
@@ -283,11 +283,9 @@ wagtail-metadata==5.0.0
     # via -r requirements.in
 wagtailmedia==0.14.5
     # via -r requirements.in
-webencodings==0.5.1
-    # via html5lib
 whitenoise==6.8.2
     # via -r requirements.in
-willow[heif]==1.6.3
+willow[heif]==1.9.0
     # via
     #   wagtail
     #   willow