chore: fix linting issues

- Remove unused eslint-disable directives for @typescript-eslint/no-var-requires

packages/http-client/__tests__/proxy.test.ts

@@ -4,7 +4,7 @@ import * as http from 'http'
 import * as httpm from '../lib/'
 import * as pm from '../lib/proxy'
 import {ProxyAgent} from 'undici'
-// eslint-disable-next-line @typescript-eslint/no-var-requires, @typescript-eslint/no-require-imports
+// eslint-disable-next-line @typescript-eslint/no-require-imports
 const proxy = require('proxy')
 
 let _proxyConnects: string[]

packages/tool-cache/__tests__/manifest.test.ts

@@ -14,7 +14,7 @@ const repo = 'some-tool'
 const fakeToken = 'notrealtoken'
 
 // just loading data and require handles BOMs etc.
-// eslint-disable-next-line @typescript-eslint/no-require-imports, @typescript-eslint/no-var-requires
+// eslint-disable-next-line @typescript-eslint/no-require-imports
 const manifestData = require('./data/versions-manifest.json')
 
 describe('@actions/tool-cache-manifest', () => {