github: Use https instead of ssh fot repositories fetching

src/db.py

@@ -42,7 +42,7 @@ class Repository(Base):
     private = Column(Boolean, nullable=False)
 
     def get_clone_url(self):
-        return f"git@github.com:{self.user.name}/{self.name}"
+        return f"https://github.com/{self.user.name}/{self.name}.git"
 
 
 class AnalyzeTask(Base):