fix: glew gl=glx -> gl: require: glx (spack#44307)

spack-environment/packages.yaml

@@ -144,9 +144,9 @@ packages:
     - '@11.2.1.east'
     - cxxstd=20 -vecgeom +threads -vtk
     - any_of: [+opengl +qt +x11, -opengl -qt -x11]
-  glew:
+  gl:
     require:
-    - gl=glx
+    - glx
   gloo:
     require:
     - '@2023-05-19'