fix(deps): update dependency io.opentelemetry:opentelemetry-api to v1.28.0 (#354)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

providers/flagd/pom.xml

@@ -72,7 +72,7 @@
         <dependency>
             <groupId>io.opentelemetry</groupId>
             <artifactId>opentelemetry-api</artifactId>
-            <version>1.27.0</version>
+            <version>1.28.0</version>
         </dependency>
     </dependencies>