Bump mikey179/vfsstream from 1.6.11 to 1.6.12 #11612

Job	Run time
Pre run	5s
Static Analysis: PHP	58s
Lint: JS	1m 11s
Unit test: JS	1m 8s
Lint: PHP	57s
Lint: CSS	0s
E2E test: JS (1, 2)	7m 2s
E2E test: JS (2, 2)	4m 52s
Unit test: PHP 8.0, WP latest	3m 0s
Unit test: PHP 8.3, WP trunk	2m 31s
Build: ${{ matrix.build }} build ZIP	0s
Feature tests: PHP 7.4, WP latest	3m 4s
Feature tests: PHP 8.3, WP trunk	2m 55s
Feature tests: PHP 8.2, WP trunk	2m 52s
Unit test: PHP 8.2, WP trunk	2m 39s
Feature tests: PHP 8.1, WP trunk	3m 8s
Unit test: PHP 8.1, WP trunk	2m 43s
Feature tests: PHP 8.0, WP latest	3m 24s
Unit test: PHP 8.0, WP trunk	3m 2s
Feature tests: PHP 7.4, WP 6.3	3m 19s
Unit test (with coverage): PHP 8.0, WP latest	4m 39s
Unit test: PHP 8.0, WP latest	2m 10s
Unit test: PHP 7.4, WP latest	3m 15s
Unit test: PHP 7.4, WP latest	2m 48s
Unit test: PHP 7.4, WP 6.3	2m 28s
Unit test: PHP 7.4, WP 6.3	2m 16s
Upload plugin ZIPs to Google Cloud Storage	0s
Comment on PR with links to plugin ZIPs	0s
	1h 6m 26s

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