chore(deps): update rust docker tag to v1.81 (#503)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| rust | stage | minor | `1.80` -> `1.81` |

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Dockerfile

@@ -1,4 +1,4 @@
-FROM rust:1.80 AS builder
+FROM rust:1.81 AS builder
 
 WORKDIR /app