add new maintainer

[rluria14]

Checklist
* [x] Used a [personal fork of the feedstock to propose changes](https://conda-forge.org/docs/maintainer/updating_pkgs.html#forking-and-pull-requests)
* [x] Bumped the build number (if the version is unchanged)
* [x] Reset the build number to `0` (if the version changed)
* [x] [Re-rendered]( https://conda-forge.org/docs/maintainer/updating_pkgs.html#rerendering-feedstocks ) with the latest `conda-smithy` (Use the phrase <code>@<space/>conda-forge-admin, please rerender</code> in a comment in this PR for automated rerendering)
* [x] Ensured the license file is being packaged.

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

[xylar]

@conda-forge-admin, please rerender

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I was trying to look for recipes to lint for you, but it appears we have a merge conflict. Please try to merge or rebase with the base branch to resolve this conflict.

Please ping the 'conda-forge/core' team (using the @ notation in a comment) if you believe this is a bug.

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

[xylar]

@conda-forge-admin, please rerender

[github-actions[bot]]

Hi! This is the friendly conda-forge automerge bot!

I considered the following status checks when analyzing this PR:

• linter: passed
• drone: passed
• travis: passed
• azure: passed

Thus the PR was passing and merged! Have a great day!

[xylar]

@rluria14 (@mxr-conda), sorry I missed this one. I guess I got confused with https://github.com/conda-forge/postgis-feedstock/pull/54