pip: bump antlr4-python3-runtime from 4.13.1 to 4.13.2 (#281)

Bumps [antlr4-python3-runtime](http://www.antlr.org) from 4.13.1 to
4.13.2.

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

pip-requirements.txt

@@ -14,6 +14,6 @@
 
 edk2-pytool-library==0.21.9
 edk2-pytool-extensions==0.27.10
-antlr4-python3-runtime==4.13.1
+antlr4-python3-runtime==4.13.2
 regex
 pygount==1.8.0