pygmt.show_versions: Show versions of IPython and rioxarray

[seisman]

Description of proposed changes

>>>pygmt.show_versions()
PyGMTinformation:
version: v0.9.1.dev13+gd2b0c39b.d20230410Systeminformation:
python: 3.10.9|packagedbyconda-forge| (main, Feb22023, 20:20:04) [GCC11.3.0]
executable: /xxx/bin/python3.10machine: Linux-6.2.8-200.fc37.x86_64-x86_64-with-glibc2.36Dependencyinformation:
numpy: 1.23.5pandas: 1.5.3xarray: 2023.2.0netCDF4: 1.6.3packaging: 23.0contextily: 1.3.0geopandas: 0.12.2IPython: 8.11.0rioxarray: 0.14.0ghostscript: 9.54.0GMTlibraryinformation:
binaryversion: 6.4.0cores: 80gridlayout: rowsimagelayout: librarypath: /xxx/lib/libgmt.sopadding: 2plugindir: /xxx/lib/gmt/pluginssharedir: /xxx/share/gmtversion: 6.4.0

Fixes #

Reminders

• Run make format and make check to make sure the code follows the style guide.
• Add tests for new features or tests that would have caught the bug that you're fixing.
• Add new public functions/methods/classes to doc/api/index.rst.
• Write detailed docstrings for all functions/methods.
• If wrapping a new module, open a 'Wrap new GMT module' issue and submit reasonably-sized PRs.
• If adding new functionality, add an example to docstrings or tutorials.
• Use underscores (not hyphens) in names of Python files and directories.

Slash Commands

You can write slash commands (/command) in the first line of a comment to perform
specific operations. Supported slash commands are:

• /format: automatically format and lint the code
• /test-gmt-dev: run full tests on the latest GMT development version