Update submodulesto 2021511. (#63)

Author: jaykrell

.gitmodules

@@ -1,20 +1,12 @@
 [submodule "MU_BASECORE"]
     path = MU_BASECORE
     url = https://github.com/microsoft/mu_basecore.git
-    branch = release/202502
+    branch = release/202511
 [submodule "Common/MU"]
     path = Common/MU
     url = https://github.com/microsoft/mu_plus.git
-    branch = release/202502
-[submodule "Common/MU_TIANO"]
-    path = Common/MU_TIANO
-    url = https://github.com/microsoft/mu_tiano_plus.git
-    branch = release/202502
+    branch = release/202511
 [submodule "Feature/DEBUGGER"]
     path = Feature/DEBUGGER
     url = https://github.com/microsoft/mu_feature_debugger.git
     branch = main
-[submodule "Silicon/ARM/MU_TIANO"]
-    path = Silicon/ARM/MU_TIANO
-    url = https://github.com/microsoft/mu_silicon_arm_tiano.git
-    branch = release/202502