Bump gradle from 7.3-jdk11 to 8.8-jdk11 in /epicbox-hyperskill/gradle #168

Job	Run time
Build epicbox-go image	22s
Build epicbox/debian image	23s
Build epicbox-clojure image	23s
Build epicbox-haskell image	21s
Build epicbox-hyperskill/go image	18s
Build epicbox-hyperskill/gradle-spring image	22s
Build epicbox-hyperskill/gradle image	20s
Build epicbox-hyperskill/java image	22s
Build epicbox-hyperskill/node image	21s
Build epicbox-hyperskill/node-javascript image	22s
Build epicbox-hyperskill/python image	20s
Build epicbox/java17 image	20s
Build epicbox/kotlin image	19s
Build epicbox/node image	21s
Build epicbox/php image	20s
Build epicbox/pmd image	24s
Build epicbox/python 3.10 image	21s
Build epicbox/python 3.11 image	19s
Build epicbox/ruby image	20s
Build epicbox/scala3 image	19s
Build epicbox/scala2 image	21s
Build epicbox/typescript image	21s
Build epicbox/mono image	0s
Build epicbox-hyperskill/gcc image	0s
Build epicbox-gcc image	0s
Clean untagged images	0s
	7m 39s

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