Merge pull request #5268 from matrix-org/babolivier/account_validity_fix_schema

Fix schema update for account validity

changelog.d/5268.bugfix

@@ -0,0 +1 @@
+Fix schema update for account validity.

synapse/storage/schema/delta/54/account_validity_with_renewal.sql

@@ -13,6 +13,9 @@
  * limitations under the License.
  */
 
+-- We previously changed the schema for this table without renaming the file, which means
+-- that some databases might still be using the old schema. This ensures Synapse uses the
+-- right schema for the table.
 DROP TABLE IF EXISTS account_validity;
 
 -- Track what users are in public rooms.