Bump pyparsing from 3.1.1 to 3.1.2 (#2296)

* Bump pyparsing from 3.1.1 to 3.1.2

Bumps [pyparsing](https://github.com/pyparsing/pyparsing) from 3.1.1 to 3.1.2.
- [Release notes](https://github.com/pyparsing/pyparsing/releases)
- [Changelog](https://github.com/pyparsing/pyparsing/blob/master/CHANGES)
- [Commits](https://github.com/pyparsing/pyparsing/compare/3.1.1...pyparsing_3.1.2)

---
updated-dependencies:
- dependency-name: pyparsing
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

* Update pyparsing==3.1.2

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: JonnyWong16 <9099342+JonnyWong16@users.noreply.github.com>

[skip ci]

lib/pyparsing/unicode.py

@@ -102,17 +102,10 @@ class unicode_set:
         all characters in this range that are valid identifier body characters,
         plus the digits 0-9, and · (Unicode MIDDLE DOT)
         """
-        return "".join(
-            sorted(
-                set(
-                    cls.identchars
-                    + "0123456789·"
-                    + "".join(
-                        [c for c in cls._chars_for_ranges if ("_" + c).isidentifier()]
-                    )
-                )
-            )
+        identifier_chars = set(
+            c for c in cls._chars_for_ranges if ("_" + c).isidentifier()
         )
+        return "".join(sorted(identifier_chars | set(cls.identchars + "0123456789·")))
 
     @_lazyclassproperty
     def identifier(cls):