Removed upper bound from jinja2

Author: Maksim

requirements.txt

@@ -1,4 +1,4 @@
 aiohttp>=3.0.1,<4.0
 apispec>=3.0.0,<4.0
 webargs<6.0
-jinja2<3.0
+jinja2

setup.py

@@ -9,7 +9,7 @@ def read(file_name):
 
 setup(
     name='aiohttp-apispec',
-    version='2.2.2',
+    version='2.2.3',
     description='Build and document REST APIs with aiohttp and apispec',
     long_description=read('README.md'),
     long_description_content_type="text/markdown",