gitpod: bump node-fetch version in extensions

Related to gitpod-io/gitpod#7360

Currently, When the server has a root cert cross-signed by the
expired `DST ROOT CA X3`. There's a possiblity of the client having
an older version of `electron` in their code that causes the cert
expiry failure.

While, asking users to update their vs code should be our first
suggestion, In some cases using the latest version of `node-fetch`
also fixed the issue (not exactly sure why). This PR bumps the
`node-fetch` dependency to the one that the `code-server` uses.

Signed-off-by: Tarun Pothulapati <[email protected]>

Author: Pothulapati

extensions/gitpod/package.json

@@ -45,7 +45,7 @@
 	"dependencies": {
 		"@gitpod/local-app-api-grpcweb": "main",
 		"@improbable-eng/grpc-web-node-http-transport": "^0.14.0",
-		"node-fetch": "^2.6.1",
+		"node-fetch": "^2.6.7",
 		"tmp": "^0.2.1",
 		"vscode-nls": "^5.0.0"
 	},