Bump numpy from 1.21.2 to 1.21.3

Bumps [numpy](https://github.com/numpy/numpy) from 1.21.2 to 1.21.3.
- [Release notes](https://github.com/numpy/numpy/releases)
- [Changelog](https://github.com/numpy/numpy/blob/main/doc/HOWTO_RELEASE.rst.txt)
- [Commits](numpy/numpy@v1.21.2...v1.21.3)

---
updated-dependencies:
- dependency-name: numpy
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

requirements.txt

@@ -1,7 +1,7 @@
 astropy==4.3.1
 ipython==7.28.0
 matplotlib==3.4.3
-numpy==1.21.2
+numpy==1.21.3
 photutils==1.2.0
 poppy>=0.9.1
 pysiaf==0.13.0