Update checkmarx/kics Docker tag to v2.1.18 (#90)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

Dockerfile

@@ -1,5 +1,5 @@
 # use the official kics image as basis image
-FROM checkmarx/kics:v2.1.17-debian
+FROM checkmarx/kics:v2.1.18-debian
 
 WORKDIR /