Add to_utc_timestamp support in more dialects #807

Job	Run time
build-vegafusion-jupyter-packages	9m 31s
build-vegafusion-packages	1m 56s
build-vegafusion-python-embed-linux-64	10m 48s
build-vegafusion-python-embed-linux-arm64	11m 18s
build-vegafusion-python-embed-osx-64	23m 30s
build-vegafusion-python-embed-osx-arm64	21m 51s
build-vegafusion-python-embed-win-64	18m 18s
build-vegafusion-server-linux-64	10m 12s
build-vegafusion-server-linux-arm64	10m 54s
build-vegafusion-server-osx-64	8m 19s
build-vegafusion-server-osx-arm64	5m 27s
build-vegafusion-server-win-64	16m 38s
build-vegafusion-wasm	7m 19s
check-rust	7m 26s
test-rust (ubuntu-20.04)	20m 29s
test-rust (windows-2022)	27m 52s
test-rust (macos-11)	28m 37s
test-vegafusion-python-linux-64	6m 23s
test-vegafusion-jupyter-linux-64	24m 14s
test-vegafusion-python-win-64	9m 43s
test-vegafusion-python-osx-64	15m 55s
	4h 56m 40s

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