Add python-gssapi to projects list

Signed-off-by: Robbie Harwood <[email protected]>

Author: frozencemetery

_sections/30-projects.md

@@ -92,6 +92,7 @@ These projects pledge to drop Python 2 support in or before 2020.
 -[![](assets/osbrain.png)osBrain](https://github.com/opensistemas-hub/osbrain)<!-- url:https://github.com/opensistemas-hub/osbrain sg:117 -->
 -[![](assets/cylc.png)Cylc Workflow](https://cylc.github.io/)<!-- url:https://github.com/cylc/cylc-flow sg:100 -->
 -[![](assets/fenics.png)FEniCS](https://fenicsproject.org/)<!-- url:https://github.com/FEniCS/dolfin sg:77 -->
+-[![](assets/gssapi.png)GSSAPI](https://github.com/pythongssapi/)<!-- url:https://github.com/pythongssapi/python-gssapi sg:49 -->
 -[![](assets/colorio.png)colorio](https://github.com/nschloe/colorio)
 -[![](assets/tatsu.png)TatSu](https://tatsu.readthedocs.io/)
 -[![](assets/chaquopy.png)Chaquopy](https://chaquo.com/chaquopy/)