Bump com.apicatalog:carbon-did from 0.3.0 to 0.4.0

Bumps [com.apicatalog:carbon-did](https://github.com/filip26/carbon-decentralized-identifiers) from 0.3.0 to 0.4.0.
- [Release notes](https://github.com/filip26/carbon-decentralized-identifiers/releases)
- [Commits](filip26/carbon-decentralized-identifiers@v0.3.0...v0.4.0)

---
updated-dependencies:
- dependency-name: com.apicatalog:carbon-did
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pom.xml

@@ -55,7 +55,7 @@
         <argLine>-Dfile.encoding=UTF-8</argLine>
 
         <iron.vc.version>0.14.0</iron.vc.version>
-        <carbon.version>0.3.0</carbon.version>
+        <carbon.version>0.4.0</carbon.version>
         <copper.codec.version>0.1.1</copper.codec.version>
         <copper.base.version>0.5.0</copper.base.version>