chore(node-tests): Upgrade @langchain/core

[s1gr1d]

Closes https://github.com/getsentry/sentry-javascript/security/dependabot/901

Closes #18721 (added automatically)

[github-actions]

node-overhead report 🧳

Note: This is a synthetic benchmark with a minimal express app and does not necessarily reflect the real-world performance impact in an application.

Scenario	Requests/s	% of Baseline	Prev. Requests/s	Change %
GET Baseline	11,174	-	8,999	+24%
GET With Sentry	1,930	17%	1,836	+5%
GET With Sentry (error only)	7,648	68%	6,053	+26%
POST Baseline	1,155	-	1,212	-5%
POST With Sentry	577	50%	601	-4%
POST With Sentry (error only)	1,031	89%	1,062	-3%
MYSQL Baseline	4,032	-	3,296	+22%
MYSQL With Sentry	491	12%	494	-1%
MYSQL With Sentry (error only)	3,278	81%	2,631	+25%

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