[java] Bump deps from BOMs to latest versions (#15689)

Note, we don't bump Netty to 4.2.0.Final because there's a bug in that
which makes generating java modules impossible.

Author: shs96c

MODULE.bazel

@@ -225,9 +225,9 @@ maven.install(
         "org.zeromq:jeromq:0.6.0",
     ],
     boms = [
-        "io.opentelemetry:opentelemetry-bom:1.46.0",
-        "io.netty:netty-bom:4.1.118.Final",
-        "org.junit:junit-bom:5.11.4",
+        "io.opentelemetry:opentelemetry-bom:1.49.0",
+        "io.netty:netty-bom:4.1.121.Final",
+        "org.junit:junit-bom:5.12.2",
     ],
     excluded_artifacts = [
         "org.hamcrest:hamcrest-all",  # Replaced by hamcrest 2