Release langchain-text-splitters==0.2.2

Changes since langchain-text-splitters==0.2.1

text-splitters: release 0.2.2 (#23508)
text-splitters: Fix/recursive json splitter data persistence issue (#21529)
text-splitters: Introduce Experimental Markdown Syntax Splitter (#22257)
core[patch]: Pin pydantic in py3.12.4 (#23130)
text-splitters[patch]: Fix HTMLSectionSplitter (#22812)
Community[minor]: Add language parser for Elixir (#22742)
multiple: get rid of pyproject extras (#22581)