Feature request: support default values for env references in .env files used with op run

I like the idea of exporting the vault name to an environment variable when using the op:// protocol references in an .env file used with op run, but I would like to be able to have a default, as in ${APP_ENV:-dev}. It seems that this isn't supported since I get [ERROR] 2022/10/29 14:31:56 parsing Dotenv file: error at line 151 column 31: expected '}' but found ':' when I try this.

This is in CLI 2.6.2 at least.

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