Update OPENJDK_TAG to merged level jdk-11.0.26+1 #290

Job	Run time
Select platforms	1s
linux-x64 / build (debug)	1m 19s
linux-x64-hs-nopch / build (debug)	1m 18s
linux-x64 / build (release)	1m 17s
linux-cross-compile / build (aarch64)	3m 32s
linux-x64-hs-minimal / build (debug)	1m 14s
linux-cross-compile / build (arm)	3m 44s
linux-cross-compile / build (s390x)	3m 35s
linux-x64-hs-optimized / build (debug)	1m 18s
linux-x64-hs-zero / build (debug)	1m 13s
linux-x86 / build (debug)	1m 38s
linux-cross-compile / build (ppc64le)	3m 51s
linux-x86 / build (release)	1m 32s
macos-aarch64 / build (debug)	2m 8s
macos-aarch64 / build (release)	2m 22s
macos-x64 / build (debug)	1m 50s
macos-x64 / build (release)	2m 15s
windows-aarch64 / build (debug)	2m 38s
windows-x64 / build (debug)	3m 7s
windows-aarch64 / build (release)	2m 43s
windows-x64 / build (release)	2m 42s
linux-x64	0s
linux-x86	0s
macos-x64	0s
windows-x64	0s
Remove bundle artifacts	2s
	45m 19s

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