chore(deps): pin dependency @rudderstack/analytics-js to 3.20.1

Author: renovate[bot]

pnpm-lock.yaml

@@ -20,7 +20,7 @@ catalog:
   '@formatjs/fast-memoize': 2.2.7
   '@formatjs/icu-messageformat-parser': 2.11.2
   '@growthbook/growthbook-react': 1.5.1
-  '@rudderstack/analytics-js': ^3.20.1
+  '@rudderstack/analytics-js': 3.20.1
   '@segment/analytics-next': 1.81.0
   '@stylistic/eslint-plugin': 4.4.1
   '@testing-library/jest-dom': 6.6.3