Update php_codesniffer version to 4.0.2 (#437)

I believe this is necessary because of this "high" severity warning:
GHSA-hmqg-cxww-wqhq

Merge pull request #435 from cakephp/duplicate-spaces

Replace our TabAndSpaceSniff with Slevomat's DuplicateSpacesSniff

Merge pull request #421 from cakephp/5.next

5.next

fix error with change in slevomat/coding-standard 8.19.0 (#419)

* fix error with change in slevomat/coding-standard 8.19.0

* fix CI

* fix CS warnings using deprecated configs

Merge pull request #416 from cakephp/5.x-fix-error

fix error with change in slevomat/coding-standard 8.19.0

Merge pull request #414 from cakephp/phpcs-deprecated-sniffs

Replace deprecated sniffs

Merge pull request #413 from cakephp/5.next

Prepare for v5.2 release

Merge pull request #404 from cakephp/5.x-error-on-group-use

error on group use declarations

Merge pull request #396 from cakephp/5.x-attributes

add attribute rules

Merge pull request #395 from cakephp/5.x-dependencies-update

5.x dependencies update