chore(deps): update dependency ember-ajax to v5.1.2

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
ember-ajax	5.0.0 -> 5.1.2

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Release Notes

ember-cli/ember-ajax (ember-ajax)

### [`v5.1.2`](https://togithub.com/ember-cli/ember-ajax/blob/HEAD/CHANGELOG.md#512-2022-10-11) [Compare Source](https://togithub.com/ember-cli/ember-ajax/compare/v5.1.1...v5.1.2) ##### Bug Fixes - resolve `ember-polyfills.deprecate-assign` deprecation warnings ([5175d40](https://togithub.com/ember-cli/ember-ajax/commit/5175d40)) ### [`v5.1.1`](https://togithub.com/ember-cli/ember-ajax/compare/v5.1.0...v5.1.1) [Compare Source](https://togithub.com/ember-cli/ember-ajax/compare/v5.1.0...v5.1.1) ### [`v5.1.0`](https://togithub.com/ember-cli/ember-ajax/compare/v5.0.0...v5.1.0) [Compare Source](https://togithub.com/ember-cli/ember-ajax/compare/v5.0.0...v5.1.0)

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Configuration

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