build(deps): bump com.gradleup.shadow from 9.3.0 to 9.3.1

Bumps [com.gradleup.shadow](https://github.com/GradleUp/shadow) from 9.3.0 to 9.3.1.
- [Release notes](https://github.com/GradleUp/shadow/releases)
- [Commits](GradleUp/shadow@9.3.0...9.3.1)

---
updated-dependencies:
- dependency-name: com.gradleup.shadow
  dependency-version: 9.3.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -94,5 +94,5 @@ dcp = ["edc-dcp-core", "edc-dcp-issuersconfig", "edc-dcp-service", "edc-dcp-sts-
 
 [plugins]
 edc-build = { id = "org.eclipse.edc.edc-build", version = "1.1.5" }
-shadow = { id = "com.gradleup.shadow", version = "9.3.0" }
+shadow = { id = "com.gradleup.shadow", version = "9.3.1" }