[BUG] `api-linter` v2.3.1 isn't suported

[AlexCannonball]

Describe the bug^*

The extension doesn't pick up api-linter v2.3.1 and displays an error message:

api-linter is not installed. Follow the instructions here: https://linter.aip.dev/#installation

To Reproduce^*

Download api-linter v2.3.1 and make sure it's in the system's PATH and works via api-linter command.

Launch VS Code, open a .proto file, save it. The diagnostics doesn't appear, the error message is displayed.

Expected behavior^*

The extension should work with api-linter v2.3.1 and add diagnostics for .proto files.

Platform^*

• OS: Windows 10
• VS Code 1.115.0
• Version: 1.2.0

Additional context

Somewhere between v2.0.0. and v2.3.1 the linter began to return exit code 0 instead of 2 for the command

api-linter -h

* means required.