ci: Harden variables in strings #17256

Job	Run time
Front-end unit tests	2m 9s
Front-end unit tests	2m 9s
master w/ php8.3-sqlite-nocache integration tests	3m 12s
master w/ php8.3-sqlite-nocache integration tests	3m 12s
Nextcloud master php8.1 unit tests	1m 28s
Nextcloud master php8.1 unit tests	1m 28s
master w/ php8.3-mysql-nocache integration tests	3m 42s
master w/ php8.3-mysql-nocache integration tests	3m 42s
Nextcloud stable30 php8.1 unit tests	1m 16s
Nextcloud stable30 php8.1 unit tests	1m 16s
master w/ php8.3-pgsql-nocache integration tests	3m 19s
master w/ php8.3-pgsql-nocache integration tests	3m 19s
Nextcloud master php8.2 unit tests	1m 17s
Nextcloud master php8.2 unit tests	1m 17s
master w/ php8.1-sqlite-redis integration tests	11m 36s
master w/ php8.1-sqlite-redis integration tests	9m 57s
Nextcloud stable30 php8.2 unit tests	1m 25s
Nextcloud stable30 php8.2 unit tests	1m 25s
master w/ php8.2-mysql-redis integration tests	12m 9s
master w/ php8.2-mysql-redis integration tests	12m 9s
Nextcloud master php8.3 unit tests	1m 46s
Nextcloud master php8.3 unit tests	1m 46s
stable30 w/ php8.2-mysql-redis integration tests	12m 6s
stable30 w/ php8.2-mysql-redis integration tests	12m 6s
Nextcloud stable30 php8.3 unit tests	1m 52s
Nextcloud stable30 php8.3 unit tests	1m 52s
Nextcloud master php8.4 unit tests	3m 40s
Nextcloud master php8.4 unit tests	3m 40s
test-summary	5s
test-summary	4s
	2h 0m 24s

Provide feedback