chore: bump rproxy version

Author: 0x416e746f6e

l2/_op_rbuilder/mkosi.extra/etc/flashbots/op-rbuilder.yaml

@@ -1,14 +1,10 @@
 rust:
   version: 1.91.1
-
 node_healthchecker:
   git_reference: v0.1.11
-
 op_rbuilder:
   git_reference: op-rbuilder/v0.2.13
-
 rproxy:
-  git_reference: v0.0.8
-
+  git_reference: v0.0.10-dev.7
 tdx_quote_provider:
   git_reference: tdx-quote-provider/v0.1.0