fix(api): do not upgrade major versions of dns-psl automatically

api/requirements.txt

@@ -13,7 +13,7 @@ dnspython~=2.2.0
 httpretty~=1.0.5
 psycopg2~=2.9.2
 prometheus-client~=0.12.0  # added to control django-prometheus' dependency version
-psl-dns~=1.0
+psl-dns~=1.0.0
 pylibmc~=1.6.1
 pyyaml~=6.0
 requests~=2.26.0