message: Fix connectionTest.ts linting
diff: @@ -67,7 +67,7 @@ describe('Connection', () => {
  // Test passing a string to conn.request()
  const response1 = await conn.request(testUrl);
  - expect((jsforce.Connection.prototype.request as any).called).to.be.true;
  + expect(jsforce.Connection.prototype.request['called']).to.be.true;
  expect(jsforce.Connection.prototype.request['secondCall'].args[0]).to.deep.equal(expectedRequestInfo);
  expect(jsforce.Connection.prototype.request['secondCall'].args[1]).to.be.undefined;
  expect(response1).to.deep.equal(testResponse);
  @@ -85,7 +85,7 @@ describe('Connection', () => {
  const expectedRequestInfo = Object.assign({}, requestInfo, { headers: SFDX_HTTP_HEADERS });
  const httpOptions = { responseType: 'json' };
  const response = await conn.request(requestInfo, httpOptions);
  - expect((jsforce.Connection.prototype.request as any).called).to.be.true;
  + expect(jsforce.Connection.prototype.request['called']).to.be.true;
  expect(jsforce.Connection.prototype.request['secondCall'].args[0]).to.deep.equal(expectedRequestInfo);
  expect(jsforce.Connection.prototype.request['secondCall'].args[1]).to.equal(httpOptions);
  expect(response).to.deep.equal(testResponse);
  