fix: Add cucumber-picocontainer dependency for e2e tests

Added missing cucumber-picocontainer dependency to SDK module to support Cucumber e2e tests that require dependency injection.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>
Signed-off-by: Simon Schrottner <simon.schrottner@dynatrace.com>

Author: aepfli

openfeature-sdk/pom.xml

@@ -90,6 +90,13 @@
             <scope>test</scope>
         </dependency>
 
+        <dependency>
+            <groupId>io.cucumber</groupId>
+            <artifactId>cucumber-picocontainer</artifactId>
+            <version>7.27.0</version>
+            <scope>test</scope>
+        </dependency>
+
         <dependency>
             <groupId>org.simplify4u</groupId>
             <artifactId>slf4j2-mock</artifactId>