bump mysql CI to 9.1.0 #747

Job	Run time
sanity-test-run	3m 57s
alpine-linux-x86 (/awslc/tests/ci/run_fips_tests.sh, --build-arg CC=clang --build-arg CXX=clang++)	29m 43s
clang-ubuntu-2204-sanity	0s
clang-18-pedantic	0s
alpine-linux-x86 (/awslc/tests/ci/run_fips_tests.sh, --build-arg CC=gcc --build-arg CXX=g++)	26m 54s
clang-ubuntu-2004-sanity	0s
alpine-linux-x86 (/awslc/tests/ci/run_posix_tests.sh, --build-arg CC=clang --build-arg CXX=clang++)	1h 17m 52s
clang-ubuntu-2404-sanity	0s
alpine-linux-x86 (/awslc/tests/ci/run_posix_tests.sh, --build-arg CC=gcc --build-arg CXX=g++)	1h 2m 22s
FreeBSD ${{ matrix.version }} test	0s
gcc-13-pedantic	0s
gcc-4_8	1m 15s
gcc-ubuntu-2204-sanity	0s
gcc-ubuntu-2004-sanity	0s
gcc-ubuntu-2404-sanity	0s
macOS-ARM	0s
macOS-x86	0s
macOS-ARM-FIPS	0s
macOS-x86-FIPS	0s
MSVC-2019	0s
MSVC-2022	0s
MSVC-SDE-64-bit	0s
OpenBSD-x86-64 (7.4)	45m 54s
OpenBSD-x86-64 (7.5)	42m 39s
OpenBSD-x86-64 (-f, 7.4)	45m 30s
OpenBSD-x86-64 (-f, 7.5)	46m 46s
	6h 22m 52s

Provide feedback