PHPStan fix

Merge pull request #506 from wp-cli/copilot/fix-1570774-87201472-127c…

…d70a-3a52-471a-9dc4-fc27ebad98fc

Merge pull request #465 from wp-cli/fix/tests

Fix tests for Hello Dolly

Merge pull request #445 from itsmekopila/fix/429

Merge pull request #434 from wp-cli/no-lock-file

Merge pull request #427 from ernilambar/replace-plugin-in-tests

Merge pull request #425 from wp-cli/regenerate-readme

Merge pull request #422 from wp-cli/regenerate-readme

Merge pull request #398 from wp-cli/fix/396-incorrect-success-on-php-…

…requirements-mismatch

Fix counting of errors when attempting activations

Merge pull request #397 from wp-cli/regenerate-readme