build: update dependency client-oauth2 to ~4.3.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
client-oauth2	dependencies	minor	~4.2.0 -> ~4.3.0

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Release Notes

mulesoft/js-client-oauth2

### [`v4.3.3`](https://togithub.com/mulesoft/js-client-oauth2/releases/v4.3.3) [Compare Source](https://togithub.com/mulesoft/js-client-oauth2/compare/v4.3.2...v4.3.3) **1. Updated dependencies.** **2. Preserve query string params in `authorizationUri`** (Fixed [#​144](https://togithub.com/mulesoft/js-client-oauth2/issues/144) with [#​153](https://togithub.com/mulesoft/js-client-oauth2/pull/153)). Now when `authorizationUri` contains contains query string parameters, they are preserved on `getUri` methods calls. Affects methods: `ClientOAuth2.token.getUri`, `ClientOAuth2.code.getUri`. E.g. having `authorizationUri=https://example.com/foo?bar=qux` and calling `getUri` method, the output would be: Before: `https://example.com/foo?bar=qux?client_id=....` Now: `https://example.com/foo?bar=qux&client_id=....` **3. Do not send empty scopes to an auth server** (Fixed [#​98](https://togithub.com/mulesoft/js-client-oauth2/issues/98) with [#​154](https://togithub.com/mulesoft/js-client-oauth2/pull/154)). If `scopes` is set to `""` or `[]` then we send an empty string to an auth server. If `scopes` is undefined (not set), then we don't send it at all. Affects method: `getUri`, `ClientOAuth2.owner.getToken`, `ClientOAuth2.credentials.getToken`, `ClientOAuth2.jwt.getToken`, `ClientOAuth2.token.getUri`, `ClientOAuth2.code.getUri`. ### [`v4.3.2`](https://togithub.com/mulesoft/js-client-oauth2/releases/v4.3.2) [Compare Source](https://togithub.com/mulesoft/js-client-oauth2/compare/v4.3.1...v4.3.2) - Fixed `window.btoa` call issue in Internet Explorer 11 and Edge (Chromium). Contributed reports and PRs: [#​150](https://togithub.com/mulesoft/js-client-oauth2/pull/150), [#​148](https://togithub.com/mulesoft/js-client-oauth2/issues/148), [#​78](https://togithub.com/mulesoft/js-client-oauth2/issues/78), [#​70](https://togithub.com/mulesoft/js-client-oauth2/pull/70) ### [`v4.3.1`](https://togithub.com/mulesoft/js-client-oauth2/compare/v4.3.0...v4.3.1) [Compare Source](https://togithub.com/mulesoft/js-client-oauth2/compare/v4.3.0...v4.3.1) ### [`v4.3.0`](https://togithub.com/mulesoft/js-client-oauth2/releases/v4.3.0) [Compare Source](https://togithub.com/mulesoft/js-client-oauth2/compare/v4.2.5...v4.3.0) - Updated dependencies - Dropped Node 8 support

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