Bump dev.openfeature:sdk from 1.14.2 to 1.15.1

Bumps [dev.openfeature:sdk](https://github.com/open-feature/java-sdk) from 1.14.2 to 1.15.1.
- [Release notes](https://github.com/open-feature/java-sdk/releases)
- [Changelog](https://github.com/open-feature/java-sdk/blob/main/CHANGELOG.md)
- [Commits](open-feature/java-sdk@v1.14.2...v1.15.1)

---
updated-dependencies:
- dependency-name: dev.openfeature:sdk
  dependency-version: 1.15.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pom.xml

@@ -19,7 +19,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <dropwizard.version>4.0.13</dropwizard.version>
-        <openfeature-sdk.version>1.14.2</openfeature-sdk.version>
+        <openfeature-sdk.version>1.15.1</openfeature-sdk.version>
         <openfeature-contrib-providers-flagd.version>0.11.8</openfeature-contrib-providers-flagd.version>
         <jacoco-maven-plugin.version>0.8.13</jacoco-maven-plugin.version>
         <maven-compiler-plugin.version>3.14.0</maven-compiler-plugin.version>