docs: update supported TS version range

[Hazmi35]

PR Checklist

• Addresses an existing open issue: fixes #000
• That issue was marked as accepting prs
• Steps in CONTRIBUTING.md were taken

Overview

As per PR #5082, the supported TypeScript version range is updated, but it seems like README is left unchanged, this PR fixes that.

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[typescript-eslint]

Thanks for the PR, @Hazmi35!

typescript-eslint is a 100% community driven project, and we are incredibly grateful that you are contributing to that community.

The core maintainers work on this in their personal time, so please understand that it may not be possible for them to review your work immediately.

Thanks again!

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[codecov]

Codecov Report

Merging #5127 (e3c842e) into main (c9c0569) will decrease coverage by 0.38%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #5127      +/-   ##
==========================================
- Coverage   91.70%   91.32%   -0.39%     
==========================================
  Files         362      132     -230     
  Lines       12181     1487   -10694     
  Branches     3530      224    -3306     
==========================================
- Hits        11171     1358    -9813     
+ Misses        661       65     -596     
+ Partials      349       64     -285     

Flag	Coverage Δ
unittest	91.32% <ø> (-0.39%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...ges/type-utils/src/getConstrainedTypeAtLocation.ts
...t-plugin/src/rules/class-literal-property-style.ts
packages/utils/src/ts-eslint-scope/Scope.ts
packages/eslint-plugin/src/configs/base.ts
packages/eslint-plugin/src/rules/unbound-method.ts
packages/utils/src/ts-eslint-scope/Reference.ts
...int-plugin/src/rules/prefer-literal-enum-member.ts
packages/eslint-plugin/src/rules/require-await.ts
...gin/src/rules/non-nullable-type-assertion-style.ts
packages/utils/src/ts-eslint/RuleTester.ts
... and 220 more

[bradzacher]