CI: Change to running 202502 branch (#100)

## Description

Change to using 202502 Branches.

- [ ] Impacts functionality?
- [ ] Impacts security?
- [ ] Breaking change?
- [ ] Includes tests?
- [ ] Includes documentation?

## How This Was Tested
Ran CI build.

## Integration Instructions
No integration necessary.

Author: apop5

.pytool/CISettings.py

@@ -175,7 +175,7 @@ def GetDependencies(self):
             {
                 "Path": "MU_BASECORE",
                 "Url": "https://github.com/microsoft/mu_basecore.git",
-                "Branch": "release/202405"
+                "Branch": "release/202502"
             }
         ]
 

DebuggerFeaturePkg/DebuggerFeaturePkg.dsc

@@ -33,12 +33,13 @@
   TimerLib|MdePkg/Library/BaseTimerLibNullTemplate/BaseTimerLibNullTemplate.inf
   DeviceStateLib|MdeModulePkg/Library/DeviceStateLib/DeviceStateLib.inf
   RegisterFilterLib|MdePkg/Library/RegisterFilterLibNull/RegisterFilterLibNull.inf
-  NULL|MdePkg/Library/StackCheckLibNull/StackCheckLibNull.inf
 
   DebugTransportLib|DebuggerFeaturePkg/Library/DebugTransportSerialLib/DebugTransportSerialLib.inf
   WatchdogTimerLib|DebuggerFeaturePkg/Library/WatchdogTimerLibNull/WatchdogTimerLibNull.inf
   TransportLogControlLib|DebuggerFeaturePkg/Library/TransportLogControlLibNull/TransportLogControlLibNull.inf
 
+  StackCheckLib|MdePkg/Library/StackCheckLibNull/StackCheckLibNull.inf
+
 [LibraryClasses.common.PEIM]
   MemoryAllocationLib|MdePkg/Library/PeiMemoryAllocationLib/PeiMemoryAllocationLib.inf
   PeiServicesLib|MdePkg/Library/PeiServicesLib/PeiServicesLib.inf