Bump nbconvert from 6.3.0 to 6.5.1 in /lambdas/preview (#3011)
Bump nbconvert from 6.3.0 to 6.5.1 in /lambdas/preview (#3011)

* Bump nbconvert from 6.3.0 to 6.5.1 in /lambdas/preview

Bumps [nbconvert](https://github.com/jupyter/nbconvert) from 6.3.0 to 6.5.1.
- [Release notes](https://github.com/jupyter/nbconvert/releases)
- [Commits](https://github.com/jupyter/nbconvert/compare/6.3.0...6.5.1)

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

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>

* Bump MarkupSafe from 1.1.1 to 2.1.1 in /lambdas/preview

* Bump jinja2 from 2.11.3 to 3.1.2 in /lambdas/preview

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
Co-authored-by: Sergey Fedoseev <12ccfc34a576e22353a02ccc41f1e07a8efa0bc3@gmail.com>
quiltdata/quilt,quiltdata/quilt,quiltdata/quilt,quiltdata/quilt,quiltdata/quilt