sekrit: increase default length to 44

This makes all the default passwords valid Base64 yielding 264 bits of
entropy.

bin/sekrit.1

@@ -89,7 +89,7 @@ If
 is provided, the randomly generated sequence will be
 .Ar length
 characters long.
-Defaults to 43.
+Defaults to 44.
 .It Nm Cm get Ar key
 Decrypts the value associated with
 .Ar key

bin/sekrit.sh

@@ -116,7 +116,7 @@ sekrit_cp()
 sekrit_gen()
 {
 	OPTIND=1
-	len=43
+	len=44
 	while getopts l: flag; do
 		case "$flag" in
 		l)	len=$(to_number "$OPTARG") ||