fix: acts +tgeo -> +root

Author: wdconinc

spack-environment/packages.yaml

@@ -29,7 +29,7 @@ packages:
   acts:
     require:
     - '@45.1.1'
-    - cxxstd=20 +dd4hep +edm4hep +examples +fatras +geant4 +json +onnx +podio +python +svg +tgeo +pr4496 +pr4502 +pr4620
+    - cxxstd=20 +dd4hep +edm4hep +examples +fatras +geant4 +json +onnx +podio +python +svg +root +pr4496 +pr4502 +pr4620
     # ACTS requires same compiler as DD4hep since compiler options are reused
     - spec: '%gcc'
       when: '^dd4hep%gcc'