deps: update java-cloud-bom in java-samples to 26.59.0 (#11573)

* deps: update java-cloud-bom in java-samples to 26.59.0

26.52.0 is 5 months old.
26.59.0 brings a [3 month old gax hint](https://github.com/googleapis/sdk-platform-java/blame/a5d9b5857f5c7c0e787bac0e1ae25198430a7622/gax-java/gax/src/main/resources/META-INF/native-image/com.google.api/gax/native-image.properties#L11-L12)

Fixes the error of the form:
```
Fatal error: com.oracle.graal.pointsto.constraints.UnsupportedFeatureException: An object of type 'com.google.protobuf.RuntimeVersion$RuntimeDomain' was found in the image heap. This type, however, is marked for initialization at image run time for the following reason: classes are initialized at run time by default.
This is not allowed for correctness reasons: All objects that are stored in the image heap must be initialized at build time.
```

* chore: configure renovate and java-samples

Author: diegomarquezp

java-samples/native-image-sample/pom.xml

@@ -18,7 +18,7 @@
             <dependency>
                 <groupId>com.google.cloud</groupId>
                 <artifactId>libraries-bom</artifactId>
-                <version>26.52.0</version>
+                <version>26.59.0</version>
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>

renovate.json

@@ -25,6 +25,7 @@
     "**/README.md",
     "google-cloud-pom-parent/pom.xml",
     "google-cloud-jar-parent/pom.xml",
+    "java-samples/native-image-sample/pom.xml",
     "java-shared-dependencies/first-party-dependencies/pom.xml",
     "java-shared-dependencies/third-party-dependencies/pom.xml",
     ".kokoro/nightly/graalvm-native*.cfg",