Bump bufbuild/buf-setup-action from 1.48.0 to 1.49.0 #829

Job	Run time
build-eliza-cocoapods-example	41s
build-library-macos	1m 16s
build-library-ios	1m 18s
build-eliza-swiftpm-example	1m 24s
build-library-tvos	1m 24s
build-library-watchos	1m 20s
build-plugin-and-generate	1m 8s
run-conformance-tests	2m 18s
run-swiftlint	14s
run-unit-tests	2m 0s
validate-license-headers	18s
	13m 21s

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