Update Flask dependencies

app/utils/gravatar.py

@@ -0,0 +1,11 @@
+import hashlib
+
+
+def get_gravatar(email: str):
+	size = 64
+	rating = "g"
+	default = "retro"
+	url = "https://secure.gravatar.com/avatar/"
+	email_hash = hashlib.md5(email.encode("utf-8")).hexdigest()
+	link = f"{url}{email_hash}?s={size}&d={default}&r={rating}"
+	return link