tools/power turbostat: update version number

Signed-off-by: Len Brown <[e-mail]>

tools/power/x86/turbostat/turbostat.c

···
 }
 
 void print_version() {
-	fprintf(outf, "turbostat version 18.07.27"
+	fprintf(outf, "turbostat version 19.03.20"
 		" - Len Brown <[e-mail]>\n");
 }