chore(deps): update crystallang/crystal docker tag to v1.9.1 #5610

Job	Run time
matrix	39s
test (crystal, amber, crystal/amber, default)	2m 32s
test (crystal, athena, crystal/athena, default)	1m 52s
test (crystal, athena-routing, crystal/athena-routing, default)	1m 40s
test (crystal, grip, crystal/grip, default)	1m 39s
test (crystal, kemal, crystal/kemal, default)	1m 38s
test (crystal, lucky, crystal/lucky, default)	2m 51s
test (crystal, orion, crystal/orion, default)	2m 7s
test (crystal, router.cr, crystal/router.cr, default)	1m 37s
test (crystal, runcobo, crystal/runcobo, default)	1m 42s
test (crystal, shivneri, crystal/shivneri, default)	3m 41s
test (crystal, spider-gazelle, crystal/spider-gazelle, default)	1m 42s
test (crystal, toro, crystal/toro, default)	1m 55s
	25m 35s

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