chore(deps): update griefed/baseimage-ubuntu-jdk-8 docker tag to v2.0.4

This MR contains the following updates:

Package	Type	Update	Change
griefed/baseimage-ubuntu-jdk-8	image	patch	2.0.3 -> 2.0.4

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.gitlab-ci.yml

@@ -5,7 +5,7 @@ stages:
   - Build Release
 
 Gradle Test:
-  image: griefed/baseimage-ubuntu-jdk-8:2.0.3
+  image: griefed/baseimage-ubuntu-jdk-8:2.0.4
   stage: Gradle Test
   services:
     - name: griefed/gitlab-ci-cd:2.0.0
@@ -56,7 +56,7 @@ Release:
       - $CI_COMMIT_TITLE =~ /^RELEASE:.+$/
 
 pages:
-  image: griefed/baseimage-ubuntu-jdk-8:2.0.3
+  image: griefed/baseimage-ubuntu-jdk-8:2.0.4
   stage: Documentation
   services:
     - name: griefed/gitlab-ci-cd:2.0.0