Bump nbdime from 2.1.0 to 2.1.1 (#406)

Bumps [nbdime](https://github.com/jupyter/nbdime) from 2.1.0 to 2.1.1.
- [Release notes](https://github.com/jupyter/nbdime/releases)
- [Commits](https://github.com/jupyter/nbdime/compare/[email protected]@2.1.1)

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

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

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

Author: dependabot[bot]

requirements-lock.txt

@@ -53,7 +53,7 @@ myst-nb==0.10.1           # via -r requirements.txt
 myst-parser==0.12.10      # via myst-nb
 nbclient==0.5.1           # via jupyter-cache
 nbconvert==5.6.1          # via jupyter-sphinx, myst-nb, notebook
-nbdime==2.1.0             # via jupyter-cache
+nbdime==2.1.1             # via jupyter-cache
 nbformat==5.0.8           # via ipywidgets, jupyter-cache, jupyter-sphinx, jupytext, myst-nb, nbclient, nbconvert, nbdime, notebook
 nest-asyncio==1.4.3       # via nbclient
 nodeenv==1.5.0            # via pre-commit