Bump codecov/codecov-action from 4.6.0 to 5.1.2 #1756

Job	Run time
Pre run	3s
Lint: CSS	1m 1s
Lint: JS	59s
Lint: PHP	3m 13s
E2E test: JS (1, 2)	5m 26s
Static Analysis: PHP	1m 25s
E2E test: JS (2, 2)	4m 49s
Unit test: PHP 8.0, WP latest	25s
Feature tests: PHP ${{ matrix.php }}, WP ${{ matrix.wp }}	0s
Unit test: JS	58s
Unit test: PHP 8.4, WP trunk	21s
Unit test: PHP 8.3, WP trunk	24s
Unit test: PHP 8.2, WP trunk	21s
Unit test: PHP 8.1, WP trunk	21s
Unit test: PHP 8.0, WP trunk Multisite	22s
Unit test (with coverage): PHP 8.0, WP latest	23s
Unit test: PHP 8.0, WP latest , Testsuite: external-http	22s
Unit test: PHP 7.4, WP latest Multisite	25s
Unit test: PHP 7.4, WP latest , Testsuite: external-http	20s
Unit test: PHP 7.4, WP 6.5	22s
Unit test: PHP 7.4, WP 6.5 , Testsuite: external-http	23s
	22m 23s

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