Bump version to 1.2.3 and FLEVEL to 193 #2181

Job	Run time
check (libclamav, (iana_cctld\|bytecode_api_\|bytecode_hooks\|rijndael\|yara\|inffixed\|inflate\|queue\|n...	19s
check (libfreshclam)	25s
check (clamav-milter)	19s
check (clambc)	19s
check (clamconf)	24s
check (clamd)	27s
check (clamdscan)	20s
check (clamdtop)	19s
check (clamonacc, (c-thread-pool\|fts\|priv_fts))	22s
check (clamscan)	20s
check (clamsubmit)	19s
check (freshclam)	20s
check (libfreshclam)	20s
check (common)	17s
check (sigtool)	25s
check (examples)	20s
check (win32/compat)	23s
	5m 58s

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