build(deps): bump com.google.crypto.tink:tink from 1.14.0 to 1.15.0

Bumps [com.google.crypto.tink:tink](https://github.com/tink-crypto/tink-java) from 1.14.0 to 1.15.0.
- [Release notes](https://github.com/tink-crypto/tink-java/releases)
- [Commits](tink-crypto/tink-java@v1.14.0...v1.15.0)

---
updated-dependencies:
- dependency-name: com.google.crypto.tink:tink
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

gradle/libs.versions.toml

@@ -51,7 +51,7 @@ slf4j                          = "2.1.0-alpha1"
 ktfmt                          = "0.52"
 google-javaformat              = "1.23.0"
 google-auto-service            = "1.1.1"
-google-tink                    = "1.14.0"
+google-tink                    = "1.15.0"
 graalvm                        = "24.0.2"
 rsocket                        = "0.16.0"
 classgraph                     = "4.8.175"