[SPARK-53245] Update Java Operator SDK version to 5.1.2

Bumps JOSDK version to 5.1.2

contains an important fix for
operator-framework/java-operator-sdk#2869

### Does this PR introduce _any_ user-facing change?

No

### How was this patch tested?

default test suit

### Was this patch authored or co-authored using generative AI tooling?

No

Closes apache#297 from csviri/bump-josdk.

Authored-by: Attila Mészáros <[email protected]>
Signed-off-by: Dongjoon Hyun <[email protected]>

Author: csviri

gradle/libs.versions.toml

@@ -17,7 +17,7 @@
 [versions]
 fabric8 = "7.3.1"
 lombok = "1.18.38"
-operator-sdk = "5.1.1"
+operator-sdk = "5.1.2"
 okhttp = "4.12.0"
 dropwizard-metrics = "4.2.30"
 spark = "4.0.0"