Bump selenium.version from 4.19.1 to 4.20.0

Bumps `selenium.version` from 4.19.1 to 4.20.0.

Updates `org.seleniumhq.selenium:selenium-java` from 4.19.1 to 4.20.0
- [Release notes](https://github.com/SeleniumHQ/selenium/releases)
- [Commits](https://github.com/SeleniumHQ/selenium/commits/selenium-4.20.0)

Updates `org.seleniumhq.selenium:selenium-grid` from 4.19.1 to 4.20.0
- [Release notes](https://github.com/SeleniumHQ/selenium/releases)
- [Commits](https://github.com/SeleniumHQ/selenium/commits/selenium-4.20.0)

---
updated-dependencies:
- dependency-name: org.seleniumhq.selenium:selenium-java
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.seleniumhq.selenium:selenium-grid
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

pom.xml

@@ -16,7 +16,7 @@
         <httpclient5.version>5.2.1</httpclient5.version>
 
         <!-- provided -->
-        <selenium.version>4.19.1</selenium.version>
+        <selenium.version>4.20.0</selenium.version>
         <javalin.version>4.6.8</javalin.version>
 
         <!-- test -->