Merge branch 'tim/extend-timeout' into 'master'

test: mark network large test as eternal

This test takes +- 20min since it needs to go across DKG intervals and the default timeout is only 15min. (eternal means 3600s) 

See merge request dfinity-lab/public/ic!18575

rs/tests/networking/BUILD.bazel

@@ -160,6 +160,7 @@ system_test(
         "system_test_nightly",
     ],
     target_compatible_with = ["@platforms//os:linux"],  # requires libssh that does not build on Mac OS
+    test_timeout = "eternal",
     runtime_deps = GUESTOS_RUNTIME_DEPS + NNS_CANISTER_RUNTIME_DEPS + GRAFANA_RUNTIME_DEPS,
     deps = DEPENDENCIES + ["//rs/tests"],
 )