Bump com.github.ie3-institute:PowerSystemDataModel from 7.0.0 to 8.1.0

Bumps [com.github.ie3-institute:PowerSystemDataModel](https://github.com/ie3-institute/PowerSystemDatamodel) from 7.0.0 to 8.1.0.
- [Release notes](https://github.com/ie3-institute/PowerSystemDatamodel/releases)
- [Changelog](https://github.com/ie3-institute/PowerSystemDataModel/blob/dev/CHANGELOG.md)
- [Commits](ie3-institute/PowerSystemDataModel@7.0.0...8.1.0)

---
updated-dependencies:
- dependency-name: com.github.ie3-institute:PowerSystemDataModel
  dependency-version: 8.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

build.gradle

@@ -91,7 +91,7 @@ dependencies {
   }
 
   // ie³ power system data model
-  implementation('com.github.ie3-institute:PowerSystemDataModel:7.0.0') {
+  implementation('com.github.ie3-institute:PowerSystemDataModel:8.1.0') {
     exclude group: 'org.slf4j'
     exclude group: 'org.apache.logging.log4j'
     exclude group: 'com.github.ie3-institute'