Bump the python-packages group in /backend with 3 updates

Bumps the python-packages group in /backend with 3 updates: [coverage](https://github.com/nedbat/coveragepy), [psycopg2-binary](https://github.com/psycopg/psycopg2) and [sqlalchemy](https://github.com/sqlalchemy/sqlalchemy).


Updates `coverage` from 7.6.3 to 7.6.4
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](nedbat/coveragepy@7.6.3...7.6.4)

Updates `psycopg2-binary` from 2.9.9 to 2.9.10
- [Changelog](https://github.com/psycopg/psycopg2/blob/master/NEWS)
- [Commits](https://github.com/psycopg/psycopg2/commits)

Updates `sqlalchemy` from 2.0.35 to 2.0.36
- [Release notes](https://github.com/sqlalchemy/sqlalchemy/releases)
- [Changelog](https://github.com/sqlalchemy/sqlalchemy/blob/main/CHANGES.rst)
- [Commits](https://github.com/sqlalchemy/sqlalchemy/commits)

---
updated-dependencies:
- dependency-name: coverage
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: python-packages
- dependency-name: psycopg2-binary
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: python-packages
- dependency-name: sqlalchemy
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: python-packages
...

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

backend/requirements.txt

@@ -1,8 +1,8 @@
-coverage==7.6.3
+coverage==7.6.4
 Twisted==24.7.0
-psycopg2-binary==2.9.9
+psycopg2-binary==2.9.10
 pylint==3.3.1
-SQLAlchemy==2.0.35
+SQLAlchemy==2.0.36
 price-parser==0.3.4
 Scrapy==2.11.2
 nltk==3.9.1