[LOCAL] Bump Node on CircleCI to 18.18 to fix red signal

[cortinico]

Summary:

The test_js_prev_lts is currently red on CCI for 0.75, this fixes it:
https://app.circleci.com/pipelines/github/facebook/react-native/50684/workflows/6c4cff43-77c4-458c-b892-30c796a17850/jobs/1614106

Changelog:

[INTERNAL] - [LOCAL] Bump Node on CircleCI to 18.18 to fix red signal

Test Plan:

CI

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
android	hermes	arm64-v8a	20,710,645	-644,211
android	hermes	armeabi-v7a	n/a	--
android	hermes	x86	n/a	--
android	hermes	x86_64	n/a	--
android	jsc	arm64-v8a	23,912,672	-637,319
android	jsc	armeabi-v7a	n/a	--
android	jsc	x86	n/a	--
android	jsc	x86_64	n/a	--

Base commit: fcd526d
Branch: main