mixed-precision: update mixedmode base (#1289) #2293

Job	Run time
build (--disable-openmp, --with-yaml, --enable-deprecated-io)	12m 20s
build (--disable-openmp, --with-yaml, --disable-deprecated-io)	11m 6s
build (--disable-openmp, --enable-test-input=/home/unit_tests_input, --enable-deprecated-io)	10m 20s
build (--disable-openmp, --enable-test-input=/home/unit_tests_input, --disable-deprecated-io)	9m 44s
build (--enable-mixed-mode, --with-yaml, --enable-deprecated-io)	11m 46s
build (--enable-mixed-mode, --with-yaml, --disable-deprecated-io)	9m 33s
build (--enable-mixed-mode, --enable-test-input=/home/unit_tests_input, --enable-deprecated-io)	10m 41s
build (--enable-mixed-mode, --enable-test-input=/home/unit_tests_input, --disable-deprecated-io)	11m 41s
build (--disable-setting-flags, --with-yaml, --enable-deprecated-io)	9m 49s
build (--disable-setting-flags, --with-yaml, --disable-deprecated-io)	9m 31s
build (--disable-setting-flags, --enable-test-input=/home/unit_tests_input, --enable-deprecated-io)	12m 16s
build (--disable-setting-flags, --enable-test-input=/home/unit_tests_input, --disable-deprecated-io)	12m 19s
build (--with-mpi=no, --with-yaml, --enable-deprecated-io)	4m 49s
build (--with-mpi=no, --with-yaml, --disable-deprecated-io)	4m 2s
build (--with-mpi=no, --enable-test-input=/home/unit_tests_input, --enable-deprecated-io)	4m 14s
build (--with-mpi=no, --enable-test-input=/home/unit_tests_input, --disable-deprecated-io)	4m 42s
	2h 28m 53s

Provide feedback