.DS_Store appears as a workspace in `devpod up`

[alipatti]

The hidden .DS_Store file appears as an option for workspaces when running devpod up on Mac. Somewhat related to #852 and #854.

Reproducing:

• Navigate to ~/.devpod/contexts/default/workspaces in Finder and change something in the window (e.g., toggling a folder drop down, changing the sort order, etc.). This will create the .DS_Store file.
• Run devpod up. .DS_Store will be shown as a possible workspace (but it obviously won't launch if selected).

Local Environment:

• DevPod Version: 0.5.16
• Operating System: mac
• ARCH of the OS: x86

DevPod Provider: local Docker