fix: require .js extension once integrated in wdio (#1974)

Fix error once integrated in wdio. See webdriverio/webdriverio#14953 (comment)

Author: dprevost-LMI

src/matchers/snapshot.ts

@@ -3,7 +3,7 @@ import type { AssertionError } from 'node:assert'
 
 import { expect } from 'expect'
 import { stripSnapshotIndentation } from '@vitest/snapshot'
-import { SnapshotService } from '../snapshot'
+import { SnapshotService } from '../snapshot.js'
 
 interface InlineSnapshotOptions {
     inlineSnapshot: string