Add faq entry about 4-byte support

Co-authored-by: anoy <anoymouserver+github@mailbox.org>
Signed-off-by: Benjamin Brahmer <info@b-brahmer.de>

.github/release-drafter.yml

@@ -1,30 +0,0 @@
-name-template: '$RESOLVED_VERSION'
-tag-template: '$RESOLVED_VERSION'
-categories:
-  - title: 'Changed'
-    labels:
-      - 'change'
-      - 'enhancement'
-  - title: 'Fixed'
-    labels:
-      - 'fix'
-      - 'bugfix'
-      - 'bug'
-  - title: 'Dependencies'
-    labels:
-      - 'dependencies'
-change-template: '- $TITLE @$AUTHOR (#$NUMBER)'
-change-title-escapes: '\<*_&'
-version-resolver:
-  major:
-    labels:
-      - 'major'
-  minor:
-    labels:
-      - 'minor'
-  patch:
-    labels:
-      - 'patch'
-  default: patch
-template: |
-  $CHANGES

docs/faq.md

@@ -106,3 +106,13 @@ the `--purge-unread` option, unread items are also purged (starred items are sti
 The purge count only applies to the items that are purged. For example, when purging a feed that has 100 unread items, 100 starred read
 items and 100 unstarred read items, using a `purge-count` of 50 would keep all unread and starred items and the latest 50 read items. Using
 a `purge-count` of 50 along with `--purge-unread` would keep the all starred items plus the latest 50 from the set of unread and read items.
+
+## Missing 4-byte support SQLSTATE[22007]: Invalid datetime format: 1366 Incorrect string value: ...
+
+This is likely caused by your feed using emojis in the feed title or text.
+
+The DB is then not able to store the feed and runs into strange decoding errors.
+
+You need to convert your DB to support 4 bytes, check the [Nextcloud documentation](https://docs.nextcloud.com/server/stable/admin_manual/configuration_database/mysql_4byte_support.html).
+
+References [#1165](https://github.com/nextcloud/news/issues/1165) [#526](https://github.com/nextcloud/news/issues/526)