docs: update release notes for 3.3.6 #68

Job	Run time
Compile templates and cache kotlinc output	3m 56s
FreeBSD Cross	4m 29s
Linux (x64)	4m 43s
macOS (x64)	9m 53s
Linux Cross (arm32)	4m 21s
macOS (arm64)	3m 20s
Linux Cross (arm64)	3m 53s
Windows (x86)	2m 57s
Linux Cross (ppc64le)	4m 16s
Windows (x64)	5m 47s
Linux Cross (riscv64)	3m 56s
Windows (arm64)	2m 39s
	54m 10s

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