Remove testing pin to 1.77.3 when VS Code issue is resolved

[gjsjohnmurray]

See microsoft/vscode#181527

vscode-sqltools/test/runVscodeTests.js

Lines 5 to 12 in 980e1a8

	async function main() {
	// Testing is currently pinned to using 1.77.3 (see https://github.com/microsoft/vscode/issues/152938#issuecomment-1534782052)
	const VSCODE_VERSION = "1.77.3";
	try {
	// Download VS Code, unzip it and run the integration test
	console.log("Start running tests. Will wait til get the results");
	const interval = setInterval(() => process.stderr.write("."), 1000);
	const code = await runTests({ version: VSCODE_VERSION, extensionDevelopmentPath, extensionTestsPath, launchArgs: ['--disable-extensions'] });