support phi-3 128k #2761

Job	Run time
build-and-test-cpp-aarch64 (openblas)	4m 5s
build-python-wheels (ubuntu-20.04, auto64)	2h 2m 23s
build-and-push-docker-images	1h 51m 14s
build-python-wheels (macos-11, auto64)	37m 4s
build-and-test-cpp-x86_64 (ubuntu-20.04, mkl)	6m 0s
build-python-wheels (windows-2019, auto64)	5h 26m 4s
check-python-style	12s
build-and-test-cpp-x86_64 (ubuntu-20.04, dnnl)	5m 24s
build-python-wheels (ubuntu-20.04, aarch64)	1h 14m 30s
build-and-test-cpp-x86_64 (macos-11, mkl)	10m 51s
build-python-wheels (macos-11, arm64)	15m 9s
build-and-test-cpp-x86_64 (macos-11, dnnl)	10m 32s
build-and-deploy-docs	1m 12s
test-python-wheels (ubuntu-20.04)	7m 53s
test-python-wheels (macos-11)	3m 51s
test-python-wheels (windows-2019)	5m 23s
publish-python-wheels-on-pypi	0s
	12h 21m 47s

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