chore: enhance IP Regex to reduce false positives

.githooks/pre-commit

-#!/bin/bash
+#!/usr/bin/env bash
 #
 # An example hook script to verify what is about to be committed.
 # Called by "git commit" with no arguments.  The hook should
@@ -103,7 +103,7 @@ echo "SUCCESS: URL detection stage."
 
 ### IP address detection stage
 # This is pretty basic regex matching, but it's a start.
-IP_REGEX='[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}'
+IP_REGEX='[^a-zA-ZäöÜÄÖÜß/\\\-][0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}'
 ${GREP_CMD} ${GREP_EXCLUDES} -e "${IP_REGEX}" "${REPOPATH}" | grep -v "127.0.0"
 if [[ ${?} -eq 0 ]]; then
 	echo "ERROR: found IP address."