Merge branch 'dependency-updates' into 'master'

set pillow and lxml versions. Downgrade sqlalchemy

See merge request !79

Pipfile

@@ -25,9 +25,11 @@ databases = {extras=["postgresql", "sqlite"], version = "==0.3.2"}
 fastapi = "*"
 gunicorn = "*"
 httpx = "==0.11.1"
+lxml = "==4.6.3"
 openpyxl = "*"
+pillow = "==8.1.1"
 pydantic = "*"
-sqlalchemy = "*"
+sqlalchemy = "<1.4.0"
 sqlalchemy-utc = "*"
 typer = "*"
 typing = "*"