msggen: regenerate.

Somehow GitHub's "Enable auto-merge" merged the PR without it actually passing.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

Author: rustyrussell

.msggen.json

@@ -597,6 +597,7 @@
             "AskRene-Bias-Channel.bias": 3,
             "AskRene-Bias-Channel.description": 4,
             "AskRene-Bias-Channel.layer": 1,
+            "AskRene-Bias-Channel.relative": 5,
             "AskRene-Bias-Channel.short_channel_id_dir": 2
         },
         "Askrene-bias-channelResponse": {
@@ -3948,6 +3949,10 @@
             "added": "v24.11",
             "deprecated": null
         },
+        "AskRene-Bias-Channel.relative": {
+            "added": "v25.05",
+            "deprecated": null
+        },
         "AskRene-Bias-Channel.short_channel_id_dir": {
             "added": "v24.11",
             "deprecated": null