Bumps [matplotlib](https://github.com/matplotlib/matplotlib) from 3.4.1 to 3.4.2. - [Release notes](https://github.com/matplotlib/matplotlib/releases) - [Commits](https://github.com/matplotlib/matplotlib/compare/v3.4.1...v3.4.2) Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>