Bump psycopg2 from 2.9.3 to 2.9.4 (#253)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements.txt

@@ -1,4 +1,4 @@
 Brotli==1.0.9
 cchardet==2.1.7
 mysqlclient==2.1.1
-psycopg2==2.9.3
+psycopg2==2.9.4