chore(ci): increase concurrency limit for faster E2E tests #721

Job	Run time
controller image	1m 25s
job matrix	12s
helpers	26s
hello-pepr-alias	27s
hello-pepr-config	26s
hello-pepr-config-ignored-ns	31s
hello-pepr-deletion-timestamp	28s
hello-pepr-finalize	27s
hello-pepr-hooks	32s
hello-pepr-mutate	26s
hello-pepr-ns-all	26s
hello-pepr-ns-bounded	35s
hello-pepr-ns-wrong	32s
hello-pepr-onschedule	32s
hello-pepr-reconcile-global	26s
hello-pepr-reconcile-kind	32s
hello-pepr-reconcile-kindns	28s
hello-pepr-reconcile-kindnsname	27s
hello-pepr-regex-name	26s
hello-pepr-regex-ns-all	32s
hello-pepr-regex-ns-bounded	26s
hello-pepr-regex-ns-wrong	26s
hello-pepr-store	25s
hello-pepr-store-redact-logs	37s
hello-pepr-validate	26s
hello-pepr-watch	26s
test-specific-version	33s
	13m 35s

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