Bump org.htmlunit:htmlunit-cssparser from 4.5.0 to 4.6.0

Bumps [org.htmlunit:htmlunit-cssparser](https://github.com/HtmlUnit/htmlunit-cssparser) from 4.5.0 to 4.6.0.
- [Release notes](https://github.com/HtmlUnit/htmlunit-cssparser/releases)
- [Commits](HtmlUnit/htmlunit-cssparser@4.5.0...4.6.0)

---
updated-dependencies:
- dependency-name: org.htmlunit:htmlunit-cssparser
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -25,7 +25,7 @@
         <maven.compiler.source>8</maven.compiler.source>
         <maven.compiler.target>8</maven.compiler.target>
 
-        <htmlunitcssparser.version>4.5.0</htmlunitcssparser.version>
+        <htmlunitcssparser.version>4.6.0</htmlunitcssparser.version>
         <htmlunitcsp.version>4.5.0</htmlunitcsp.version>
         <htmlunitneko.version>4.6.0-SNAPSHOT</htmlunitneko.version>
         <htmlunitxpath.version>4.5.0</htmlunitxpath.version>