Upgrade digipost-html-validator

There is a vulnerability in OWASP Java HTML Sanitizer, but we
remove the risk in v1.1.4 of digipost-html-validator:
https://github.com/digipost/digipost-html-validator/releases/tag/1.1.4.

Author: eivindsd

pom.xml

@@ -44,7 +44,7 @@
         <dependency>
             <groupId>no.digipost</groupId>
             <artifactId>digipost-html-validator</artifactId>
-            <version>1.1.3</version>
+            <version>1.1.4</version>
         </dependency>
         <dependency>
             <groupId>no.digipost</groupId>