Bump extension version to v0.8.11 #11285

Job	Run time
lint_ruby	23s
lint_node	44s
build_node (ubuntu-latest)	1m 43s
Ruby 3.1 on ubuntu-latest	14m 57s
build_node (macos-latest)	1m 52s
Ruby 3.2 on ubuntu-latest	14m 8s
spelling	13s
build_node (windows-latest)	7m 43s
Verify Jekyll website builds	9s
Ruby 3.3 on ubuntu-latest	11m 26s
Ruby 3.1 on macos-latest	8m 41s
Ruby 3.2 on macos-latest	8m 59s
Ruby 3.3 on macos-latest	7m 6s
Ruby 3.1 on windows-latest	20m 23s
Ruby 3.2 on windows-latest	21m 44s
Ruby 3.3 on windows-latest	22m 45s
	2h 22m 56s

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