Bump phpstan/phpstan from 1.12.10 to 2.1.0 #1755

Job	Run time
Pre run	5s
Lint: JS	1m 5s
Static Analysis: PHP	17s
Lint: PHP	3m 0s
Lint: CSS	0s
Unit test: JS	1m 5s
Unit test: PHP 8.0, WP latest	1m 51s
E2E test: JS (1, 2)	6m 31s
Unit test: PHP 8.4, WP trunk	2m 16s
E2E test: JS (2, 2)	4m 43s
Unit test: PHP 8.3, WP trunk	2m 2s
Unit test: PHP 8.2, WP trunk	1m 57s
Unit test: PHP 8.1, WP trunk	1m 47s
Feature tests: PHP 7.4, WP latest	2m 52s
Unit test: PHP 8.0, WP trunk Multisite	1m 47s
Feature tests: PHP 8.4, WP trunk	3m 17s
Unit test (with coverage): PHP 8.0, WP latest	2m 11s
Unit test: PHP 8.0, WP latest , Testsuite: external-http	1m 48s
Feature tests: PHP 8.3, WP trunk	2m 58s
Unit test: PHP 7.4, WP latest Multisite	1m 51s
Feature tests: PHP 8.2, WP trunk	2m 50s
Unit test: PHP 7.4, WP latest , Testsuite: external-http	1m 52s
Feature tests: PHP 8.1, WP trunk	3m 5s
Unit test: PHP 7.4, WP 6.5	1m 46s
Feature tests: PHP 8.0, WP latest	2m 49s
Feature tests: PHP 7.4, WP 6.5	2m 51s
Unit test: PHP 7.4, WP 6.5 , Testsuite: external-http	2m 3s
	1h 0m 39s

Provide feedback