pip-requirements.txt: Use exact match instead of compatible release

Now that we're using dependabot, strictly manage exact version of
dependencies using an exact match instead of a "compatible release".

Compatible releases (~= syntax) are described here:

  - https://peps.python.org/pep-0440/#compatible-release

Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>

pip-requirements.txt

@@ -12,8 +12,8 @@
 # https://www.python.org/dev/peps/pep-0440/#version-specifiers
 ##
 
-edk2-pytool-library~=0.12.1
-edk2-pytool-extensions~=0.20.0
+edk2-pytool-library==0.12.1
+edk2-pytool-extensions==0.20.0
 edk2-basetools==0.1.29
 antlr4-python3-runtime==4.11.1
 regex==2022.10.31