Dependancy on @testing-library/dom at ^7.0.2 causes failed installs on node less than 10.18

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- `@testing-library/react` version: 10.0.1

- `react` version:  16.13.0

- `node` version: 10.16.3

- `npm` (or `yarn`) version:  yarn v1.17.3



### Relevant code or config:

```

"@testing-library/dom@^7.0.2":

  version "7.0.2"

  resolved "https://registry.yarnpkg.com/@testing-library/dom/-/dom-7.0.2.tgz#9edc922dfe2644a3f0ff70f256d8c78a525b88c3"

  integrity sha512-5pqMlPaBC/5bvvFtuNTTcB4/Vg8NjZfs11LQQc08JhpMfx82W85nVw3re4D92A/C5O8zDkxPxyYPWNp8PtnQ/w==

  dependencies:

    "@babel/runtime" "^7.8.4"

    "@types/testing-library__dom" "^6.12.1"

    aria-query "^4.0.2"

    dom-accessibility-api "^0.3.0"

    pretty-format "^25.1.0"



"@testing-library/react@10.0.1":

  version "10.0.1"

  resolved "https://registry.yarnpkg.com/@testing-library/react/-/react-10.0.1.tgz#4f5e2a8836257c5bd3df640b21d7bea5a0d83ead"

  integrity sha512-sMHWud2dcymOzq2AhEniICSijEwKeTiBX+K0y36FYNY7wH2t0SIP1o732Bf5dDY0jYoMC2hj2UJSVpZC/rDsWg==

  dependencies:

    "@babel/runtime" "^7.8.7"

    "@testing-library/dom" "^7.0.2"

    "@types/testing-library__react" "^9.1.3"

```



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### What you did:



<!-- What you were doing -->



### What happened:

Error message:

```

error @testing-library/dom@7.0.2: The engine "node" is incompatible with this module. Expected version ">=10.18". Got "10.16.3"

```



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### Reproduction:



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### Problem description:

Yarn install is failing on node versions less the 10.18. This was fixed in @testing-library/react in version 10.0.1, and in @testing-library/dom in version 7.0.3. However, @testing-library/react requires @testing-library/dom at version ^7.0.2. Thus if @testing-library/dom is pinned at v7.0.2 in yarn.lock, yarn install still fails for node less than version 10.18.



This is an issue since AWS CodeBuild still runs on node v10.16



<!-- Please describe why the current behavior is a problem -->



### Suggested solution:

Require @testing-library/dom at version 7.0.3 or higher.

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[]