[windows installer script] Mark Fluentd support as deprecated (#6362) #13850

Job	Run time
gofmt	2m 44s
tidy	2m 12s
lint	2m 44s
coverage	2m 43s
generate-metrics	2m 44s
unit-test (macos-14) / unit-test	2m 43s
unit-test (macos-15) / unit-test	2m 43s
unit-test (ubuntu-24.04) / unit-test	2m 43s
cross-compile (binaries-windows_amd64) / compile	2m 44s
unit-test (macos-13) / unit-test	2m 28s
unit-test (macos-13-xlarge) / unit-test	2m 44s
cross-compile (binaries-darwin_amd64) / compile	2m 42s
cross-compile (binaries-linux_ppc64le) / compile	2m 42s
cross-compile (binaries-darwin_arm64) / compile	2m 43s
cross-compile (binaries-linux_amd64) / compile	2m 43s
cross-compile (binaries-linux_arm64) / compile	2m 43s
	42m 45s

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