Bump kramdown-plantuml from 1.3.2 to 1.3.3 in /tests/full

Bumps [kramdown-plantuml](https://github.com/SwedbankPay/kramdown-plantuml) from 1.3.2 to 1.3.3.
- [Release notes](https://github.com/SwedbankPay/kramdown-plantuml/releases)
- [Commits](SwedbankPay/kramdown-plantuml@1.3.2...1.3.3)

---
updated-dependencies:
- dependency-name: kramdown-plantuml
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

tests/full/Gemfile.lock

@@ -72,7 +72,7 @@ GEM
       rexml
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
-    kramdown-plantuml (1.3.2)
+    kramdown-plantuml (1.3.3)
       htmlentities (~> 4)
       kramdown (~> 2.3)
       kramdown-parser-gfm (~> 1.1)