Update OPENJDK_TAG to merged level jdk-11.0.26+2 #294

Job	Run time
Select platforms	1s
linux-x64-hs-nopch / build (debug)	1m 22s
linux-cross-compile / build (aarch64)	4m 3s
linux-x64 / build (debug)	1m 26s
linux-x64-hs-minimal / build (debug)	1m 28s
linux-cross-compile / build (arm)	3m 22s
linux-x64 / build (release)	1m 21s
linux-cross-compile / build (s390x)	59m 58s
linux-cross-compile / build (ppc64le)	4m 2s
linux-x64-hs-optimized / build (debug)	1m 31s
linux-x64-hs-zero / build (debug)	1m 31s
linux-x86 / build (debug)	1m 48s
linux-x86 / build (release)	1m 50s
macos-aarch64 / build (debug)	2m 27s
macos-x64 / build (debug)	2m 31s
macos-aarch64 / build (release)	2m 16s
windows-aarch64 / build (debug)	3m 1s
macos-x64 / build (release)	2m 10s
windows-aarch64 / build (release)	3m 25s
windows-x64 / build (debug)	2m 59s
windows-x64 / build (release)	3m 24s
linux-x64	0s
linux-x86	0s
macos-x64	0s
windows-x64	0s
Remove bundle artifacts	1s
	1h 45m 57s

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