Update xrpl dependency to 4.2.5 and replace @xpring-eng/eslint-config-base with xrplf/config-base (#335)

## High Level Overview of Change

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The following changes will be applied:
- Versions 4.2.1 -> 4.2.4 of `xrpl` were compromised. Set the caret
version to the latest rectified version 4.2.5.
- `@xpring-eng/eslint-config-base` was decommissioned. Replace with
`xrplf/config-base`

### Type of Change

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- [x] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] Refactor (non-breaking change that only restructures code)
- [ ] Tests (You added tests for code that already exists, or your new
feature included in this PR)
- [ ] Documentation Updates
- [ ] Release

Author: pdp2121

.eslintrc.js

@@ -38,12 +38,22 @@ module.exports = {
 
   plugins: ['jest', 'disable'],
   processor: 'disable/disable',
-  extends: ['@xpring-eng/eslint-config-base/loose', 'plugin:jest/recommended'],
+  extends: ['@xrplf/eslint-config', 'plugin:jest/recommended'],
   rules: {
     '@typescript-eslint/no-magic-numbers': 'off',
     '@typescript-eslint/naming-convention': 'off',
     'no-await-in-loop': 'off',
     '@microsoft-tsdoc/tsdoc-param-tag-with-invalid-name': 'off',
+    'jsdoc/check-examples': 'off',
+    // Allows the use of 'as' for type assertion for websocket messages retrieval.
+    '@typescript-eslint/consistent-type-assertions': [
+      'warn',
+      {
+        assertionStyle: 'as',
+      },
+    ],
+    'max-params': ['warn', 4],
+
     // Removes comments and blank lines from the max-line rules
     'max-lines-per-function': [
       'warn',