build(deps): bump jackson from 2.20.1 to 2.21.0 (#413)

Bumps `jackson` from 2.20.1 to 2.21.0.

Updates `com.fasterxml.jackson.core:jackson-core` from 2.20.1 to 2.21.0
- [Commits](FasterXML/jackson-core@jackson-core-2.20.1...jackson-core-2.21.0)

Updates `com.fasterxml.jackson.core:jackson-databind` from 2.20.1 to 2.21.0
- [Commits](https://github.com/FasterXML/jackson/commits)

---
updated-dependencies:
- dependency-name: com.fasterxml.jackson.core:jackson-core
  dependency-version: 2.21.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: com.fasterxml.jackson.core:jackson-databind
  dependency-version: 2.21.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -7,7 +7,7 @@ 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 = "0.15.1"
-jackson = "2.20.1"
+jackson = "2.21.0"
 jetbrainsAnnotation = "26.0.2-1"
 jakarta-ws-rs = "4.0.0"
 jupiter = "6.0.2"