Fix: quote `nextcloud.objectStore.s3.legacyAuth` value when rendering as env var #1136

Job	Run time
changes	10s
lint	29s
test (Default - no custom values)	1m 37s
test (PostgreSQL Enabled, --helm-extra-set-args "--set=postgresql.enabled=true --set=postgresql.g...	2m 19s
test (Nginx Enabled, --helm-extra-set-args "--set=image.flavor=fpm --set=nginx.enabled=true")	1m 44s
test (Horizontal Pod Autoscaling Enabled, --helm-extra-set-args "--set=hpa.enabled=true --set=hpa...	1m 43s
test (S3 Enabled as Primary Storage, --namespace nextcloud --skip-clean-up --helm-extra-set-args ...	1m 58s
summary	4s
	10m 4s

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