modify PFAM ws client to use HTTP instead of HTTPS

otherwise SSL handshake fails with requests.

ippisite/ippidb/ws.py

@@ -350,7 +350,7 @@ def get_pfam_info(pfam_acc: str) -> dict:
     :return: Protein family metadata (id, description).
     :rtype: dict
     """
-    resp = requests.get("https://pfam.xfam.org/family/{}?output=xml".format(pfam_acc))
+    resp = requests.get("http://pfam.xfam.org/family/{}?output=xml".format(pfam_acc))
     root = ET.fromstring(resp.text)
     ns = {"pfam": "https://pfam.xfam.org/"}
     entry = root.findall("pfam:entry", ns)[0]