Bump com.google.crypto.tink:tink from 1.14.1 to 1.15.0 (#596)

Bumps [com.google.crypto.tink:tink](https://github.com/tink-crypto/tink-java) from 1.14.1 to 1.15.0.
- [Release notes](https://github.com/tink-crypto/tink-java/releases)
- [Commits](tink-crypto/tink-java@v1.14.1...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] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

build.gradle

@@ -83,7 +83,7 @@ dependencies {
     implementation 'com.github.librepdf:openpdf:2.0.3'
     implementation 'org.yaml:snakeyaml:2.2'
     implementation 'com.mailgun:mailgun-java:1.1.3'
-    implementation 'com.google.crypto.tink:tink:1.14.1'
+    implementation 'com.google.crypto.tink:tink:1.15.0'
     implementation 'org.springframework.session:spring-session-jdbc'
     implementation 'org.apache.tika:tika-core:2.9.2'