bazel: Solve grpc-java problem

flatbuffers depends on an older grpc-java version, which breaks the
`bazel mod deps` command.

The easiest way is to depend on the version with the fix, eventhough we
have no other direct dependency. This way, the bigger version gets
selected.

In addition, we ensure that this will not break again.

Author: castler

.github/workflows/tests.yml

@@ -54,3 +54,6 @@ jobs:
       - name: Run Validation Tooling tests
         run: |
           bazel test //validation/...
+      - name: Ensure correct dependency resolution
+        run: |
+          bazel mod deps --lockfile_mode=update

MODULE.bazel

@@ -34,6 +34,11 @@ bazel_dep(name = "bazel_skylib", version = "1.7.1")
 bazel_dep(name = "buildifier_prebuilt", version = "8.2.0.2")
 bazel_dep(name = "flatbuffers", version = "25.9.23")
 
+# flatbuffers depends on this transitively, but older grpc-java version
+# The main problem is that there the command `bazel mod deps` is broken, which
+# we want and need to support for dependant modules
+bazel_dep(name = "grpc-java", version = "1.75.0.bcr.1")
+
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 # CC Toolchain
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