fix: update foxy for Boost 1.90 compatibility and unpin macOS Boost #1687

Job	Run time
build-test-server	7m 13s
build-test-server-curl	7m 53s
build-test-server-windows	17m 48s
build-test-server-windows-curl	19m 2s
build-test-server-mac	5m 21s
build-test-server-mac-curl	5m 17s
contract-tests-curl	4m 31s
contract-tests	4m 26s
	1h 11m 31s

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