Update file(s) from "wp-cli/.github"

Require WP-CLI v3

Tests: improve Windows compatibility (#93)

Regenerate README file (#90)

Co-authored-by: Alain Schlesser <alain.schlesser@gmail.com>

Add .gitattributes file

See wp-cli/wp-cli#5070

Merge pull request #81 from kkmuffme/patch-1

Merge pull request #77 from wp-cli/update/wp-cli-2-12

Merge pull request #75 from wp-cli/no-lock-file

Merge pull request #71 from wp-cli/fix/wpcs-3.0-issues

Regenerate README file - 2023-06-09 (#69)

Co-authored-by: Alain Schlesser <alain.schlesser@gmail.com>