Bump psycopg2-binary from 2.8.5 to 2.8.6 (#691)

Bumps [psycopg2-binary](https://github.com/psycopg/psycopg2) from 2.8.5 to 2.8.6.
- [Release notes](https://github.com/psycopg/psycopg2/releases)
- [Changelog](https://github.com/psycopg/psycopg2/blob/master/NEWS)
- [Commits](https://github.com/psycopg/psycopg2/commits)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>
Co-authored-by: Pomax <pomax@nihongoresources.com>

requirements.txt

@@ -36,7 +36,7 @@ oauth2client==4.1.3       # via -r requirements.in
 oauthlib==3.1.0           # via requests-oauthlib
 pillow==7.1.2             # via -r requirements.in
 protobuf==3.12.0          # via google-api-core, googleapis-common-protos
-psycopg2-binary==2.8.5    # via -r requirements.in
+psycopg2-binary==2.8.6    # via -r requirements.in
 pyasn1-modules==0.2.8     # via google-auth, oauth2client
 pyasn1==0.4.8             # via oauth2client, pyasn1-modules, rsa
 python-dateutil==2.8.1    # via botocore, faker