build(deps): bump org.eclipse.edc:boot-spi from 0.15.0 to 0.15.1 (#408)

Bumps [org.eclipse.edc:boot-spi](https://github.com/eclipse-edc/Connector) from 0.15.0 to 0.15.1.
- [Release notes](https://github.com/eclipse-edc/Connector/releases)
- [Commits](eclipse-edc/Connector@v0.15.0...v0.15.1)

---
updated-dependencies:
- dependency-name: org.eclipse.edc:boot-spi
  dependency-version: 0.15.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -6,7 +6,7 @@ assertj = "3.27.6"
 checkstyle = "12.3.0"
 edc = "0.16.0-SNAPSHOT"
 # the edc-boot-spi dependency is used only for tests, this fixed version prevents the "chicken-egg" problem
-edc-test = "0.15.0"
+edc-test = "0.15.1"
 jackson = "2.20.1"
 jetbrainsAnnotation = "26.0.2-1"
 jakarta-ws-rs = "4.0.0"