Release langchain-core==0.2.5

Changes since langchain-core==0.2.4

multiple: get rid of pyproject extras (#22581)
core[patch]: Release 0.2.5 (#22642)
core[patch]: Correctly order parent ids in astream events (from root to immediate parent), add defensive check for cycles (#22637)
core[minor]: Add parent_ids to astream_events API (#22563)
core[minor]: Add an async root listener and with_alisteners method (#22151)
core[patch]: Use explicit classes for InMemoryByteStore and InMemoryStore (#22608)
docs: Fix description (#22611)
docs: Fix typo (#22603)
core[patch]: Improve VectorStore API doc (#22547)
core[patch]: Add similarity_score_threshold to VectorStore search types (#22477)
core[patch]: Deduplicate of callback handlers in merge_configs (#22478)