fix TFlags constraint

[marcj]

This makes it compatible with TypeScript 4.8

Before this change, you get an error:

node_modules/@oclif/parser/lib/index.d.ts:16:52 - error TS2344: Type 'TFlags' does not satisfy the constraint 'OutputFlags<any>'.

16 }>(argv: string[], options: Input<TFlags>): Output<TFlags, TArgs>;
                                                      ~~~~~~

[git2gus[bot]]

Git2Gus App is installed but the .git2gus/config.json doesn't exist.

[salesforce-cla[bot]]

Thanks for the contribution! Before we can merge this, we need @marcj to sign the Salesforce.com Contributor License Agreement.