⬆️ Bump psycopg-binary from 3.1.14 to 3.1.15 in /shifter (#241)

Bumps [psycopg-binary](https://github.com/psycopg/psycopg) from 3.1.14 to 3.1.15.
- [Changelog](https://github.com/psycopg/psycopg/blob/master/docs/news.rst)
- [Commits](psycopg/psycopg@3.1.14...3.1.15)

---
updated-dependencies:
- dependency-name: psycopg-binary
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

shifter/requirements.txt

@@ -3,6 +3,6 @@ Django==5.0
 django-crontab==0.7.1
 gunicorn==21.2.0
 psycopg==3.1.15
-psycopg-binary==3.1.14
+psycopg-binary==3.1.15
 sqlparse==0.4.4
 typing_extensions==4.9.0