Update chains-opensource.md

Author: algomaster99

chains-opensource.md

@@ -35,6 +35,7 @@ Applications:
   * [reproducible builds: windows binary not being placed in artifact](https://lists.apache.org/thread/pqy75vx3zsd2qkq822qz8gb1ycss5f8d)
   * [reproducible builds: find reason for missing directory in archive](https://github.com/apache/paimon/issues/5002)
   * [reproducible builds: ldapchai bytecode difference](https://github.com/ldapchai/ldapchai/issues/32)
+  * [reproducible builds: Questions: why do submodules of v4.1.32 have SBOM of metrics-parent?](https://github.com/dropwizard/metrics/discussions/4703)
 * Diffoscope
   * [Bug Report: Different output of diffoscope on different operating system](https://lists.reproducible-builds.org/pipermail/diffoscope/2024-August/002788.html)
   * [Bug Report: Propose fix for disabling syntax highlighting in the diff](https://lists.reproducible-builds.org/pipermail/diffoscope/2024-August/002783.html)