[LLDB] Update inspect getargspec to getfullargspec

[omjavaid]

Summary

This patch replaces getargspec with getfullargspec in funcutils.py.
getargspec has been deprecated by python 11x release. This is
important to run LLDB testsuite in Windows/Arm64 platform
where Python native will be available from python release onwards.

Note: getfullargspec is not available in python 2

[DavidSpickett]

by python 11x release

Is this a typo or some numbering system not related to the 2.x/3.x cadence?

[omjavaid]

In D121786#3385619, @DavidSpickett wrote:

by python 11x release

Is this a typo or some numbering system not related to the 2.x/3.x cadence?

This is a typo. Sorry I missed 3.11x

lldb/packages/Python/lldbsuite/support/funcutils.py

 import inspect
 
 def requires_self(func):
-    func_argc = len(inspect.getargspec(func).args)
+    func_argc = len(inspect.getfullargspec(func).args)
     if func_argc == 0 or (
         getattr(
             func,
             'im_self',
             None) is not None) or (
             hasattr(
                 func,
                 '__self__')):
         return False
     else:
         return True