Upgrade dependencies with pip-compile -U

Specifically, this change gets us the newest version of render_engine
with folder structure updates.

Author: jonafato

requirements.txt

@@ -46,7 +46,7 @@ pytzdata==2020.1
     # via pendulum
 pyyaml==6.0
     # via python-frontmatter
-render-engine==2022.7.2
+render-engine==2022.8.1
     # via -r requirements.in
 rfc3986[idna2008]==1.5.0
     # via httpx