fix(deps): update dependency com.squareup.okio:okio-bom to v3.12.0 (#7372)

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

Author: renovate[bot]

dependencyManagement/build.gradle.kts

@@ -17,7 +17,7 @@ val DEPENDENCY_BOMS = listOf(
   "com.google.guava:guava-bom:33.4.8-jre",
   "com.google.protobuf:protobuf-bom:4.31.1",
   "com.squareup.okhttp3:okhttp-bom:4.12.0",
-  "com.squareup.okio:okio-bom:3.11.0", // applies to transitive dependencies of okhttp
+  "com.squareup.okio:okio-bom:3.12.0", // applies to transitive dependencies of okhttp
   "io.grpc:grpc-bom:1.73.0",
   "io.netty:netty-bom:4.2.1.Final",
   "io.zipkin.brave:brave-bom:6.2.0",