fix ci

.drone.yml

@@ -10,7 +10,7 @@ steps:
       - git clone https://git.aiterp.net/namegen5/samples
 
   - name: compile-samples
-    image: rust:1.50.0-slim
+    image: rust:1.63.0-slim
     depends_on: [download-samples]
     environment:
       SOURCE_DIR: ../samples
@@ -21,7 +21,7 @@ steps:
       - cargo run --release
 
   - name: lambda-build
-    image: rust:1.50.0-slim
+    image: rust:1.63.0-slim
     depends_on: [compile-samples]
     commands:
       - cd ./src/rust/namegen-lambda