changelog: Add entry for dustmite --timeout option

Document the new --timeout option for the dub dustmite command, which
adds a timeout in seconds for each oracle invocation to prevent the
dustmite process from hanging indefinitely. The option requires the
timeout command from coreutils to be available.

Author: CyberShadow

changelog/dustmite-timeout.dd

@@ -0,0 +1,6 @@
+Added `--timeout` option to `dub dustmite` command.
+
+Adds a timeout (in seconds) for each oracle invocation, preventing
+the dustmite process from hanging indefinitely when the test command
+does not terminate. Requires the `timeout` command to be available
+(coreutils on Linux/macOS).