Bump aiohttp-jinja2 from 1.5 to 1.5.1

Bumps [aiohttp-jinja2](https://github.com/aio-libs/aiohttp_jinja2) from 1.5 to 1.5.1.
- [Release notes](https://github.com/aio-libs/aiohttp_jinja2/releases)
- [Changelog](https://github.com/aio-libs/aiohttp-jinja2/blob/master/CHANGES.rst)
- [Commits](aio-libs/aiohttp-jinja2@v1.5...v1.5.1)

---
updated-dependencies:
- dependency-name: aiohttp-jinja2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -1,5 +1,5 @@
 aiohttp==3.8.3
-aiohttp-jinja2==1.5
+aiohttp-jinja2==1.5.1
 gidgethub==5.2.1
 aiohttp-session[secure]==2.12.0
 sentry-sdk==1.14.0