Buildpack auto sync should ignore debug.test

Skaffold + Golang Buildpack with enabled devmode and autosync. Start a test in debug mode in vscode which compiles debug.test and places it in a watched subfolder

### Expected behavior
nothing, completely ignored. just part of developer workflow

### Actual behavior
debug.test is not a *.go file, full rebuild of entire stack

### Information
Skaffold v1.20.0

Whilst typing this and waiting for the full rebuild I've added
```
dependencies:
ignore:
- '**/debug.test'
```

to skaffold.yaml, hope it helps