Bump requirements.txt ahead of v4.1.0 release (#4488)

* Bump requirements.txt for v4.1.0 release

* Update GDS pointer to v4.1.0

Author: thomas-bc

requirements.txt

@@ -21,8 +21,8 @@ Flask-RESTful==0.3.10
 fprime-fpl-layout==1.0.3
 fprime-fpl-write-pic==1.0.3
 fprime-fpp==3.1.0
-fprime-gds==4.0.2a11
-fprime-tools==4.0.2a2
+fprime-gds==4.1.0
+fprime-tools==4.1.0
 fprime-visual==1.0.2
 gcovr==8.2
 idna==3.10