Bump joblib from 1.0.1 to 1.2.0 in /doc/workshop

Bumps [joblib](https://github.com/joblib/joblib) from 1.0.1 to 1.2.0.
- [Release notes](https://github.com/joblib/joblib/releases)
- [Changelog](https://github.com/joblib/joblib/blob/master/CHANGES.rst)
- [Commits](joblib/joblib@1.0.1...1.2.0)

---
updated-dependencies:
- dependency-name: joblib
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

doc/workshop/requirements.txt

@@ -41,7 +41,7 @@ ipython==7.27.0
 isodate==0.6.0
 jedi==0.18.0
 Jinja2==3.0.1
-joblib==1.0.1
+joblib==1.2.0
 kiwisolver==1.3.2
 locket==0.2.0
 loguru==0.5.3