ICU-22522 Update the Azure CI from Clang 14 to Clang 16 #1232

Job	Run time
clang-valgrind-test	10m 4s
clang-valgrind-intltest (utility)	6m 44s
clang-valgrind-intltest (normalize)	5m 55s
clang-valgrind-intltest (collator)	5m 28s
clang-valgrind-intltest (regex)	5m 14s
clang-valgrind-intltest (format)	16m 3s
clang-valgrind-intltest (translit)	6m 13s
clang-valgrind-intltest (rbbi)	7m 44s
clang-valgrind-intltest (rbnf)	6m 12s
clang-valgrind-intltest (rbnfrt)	5m 48s
clang-valgrind-intltest (icuserv)	5m 23s
clang-valgrind-intltest (idna)	5m 20s
clang-valgrind-intltest (convert)	6m 31s
clang-valgrind-intltest (rbnfp)	5m 24s
clang-valgrind-intltest (csdet)	5m 7s
clang-valgrind-intltest (spoof)	4m 56s
clang-valgrind-intltest (bidi)	5m 13s
	1h 53m 19s

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