Switch to matrix include syntax in CI workflow #266

Job	Run time
Build epicbox/debian image	24s
Build epicbox-clojure image	26s
Build epicbox-go image	23s
Build epicbox-haskell image	20s
Build epicbox-hyperskill/go image	25s
Build epicbox-hyperskill/gradle image	26s
Build epicbox-hyperskill/gradle-spring image	26s
Build epicbox-hyperskill/java image	24s
Build epicbox-hyperskill/node image	22s
Build epicbox-hyperskill/node-javascript image	23s
Build epicbox-hyperskill/python image	26s
Build epicbox-java image	33s
Build epicbox-kotlin image	26s
Build epicbox-node image	23s
Build epicbox-php image	23s
Build epicbox-pmd image	22s
Build epicbox-python/310 image	5m 3s
Build epicbox-python/311 image	21s
Build epicbox-python/312 image	5m 3s
Build epicbox-ruby image	23s
Build epicbox-scala/2 image	38s
Build epicbox-scala/3 image	35s
Build epicbox-typescript image	22s
Build epicbox-hyperstyle image	22s
Build epicbox-gcc image	27s
Build epicbox-hyperskill/gcc image	24s
Build epicbox-mono image	23s
Clean untagged images	1m 34s
	22m 7s

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