go1.24: fix lint, unit and system tests

- development env: base on debian trixie with go1.24
- lint: run with default config
- fix lint errors
- fix unit tests
- fix system test

system/Dockerfile

@@ -1,12 +1,10 @@
-FROM debian:bookworm-slim
-
-RUN echo deb http://deb.debian.org/debian bookworm-backports main > /etc/apt/sources.list.d/backports.list
+FROM debian:trixie-slim
 
 RUN apt-get update -y && apt-get install -y --no-install-recommends curl gnupg bzip2 xz-utils ca-certificates vim procps \
-        golang/bookworm-backports golang-go/bookworm-backports golang-doc/bookworm-backports golang-src/bookworm-backports \
-        make git python3 python3-requests-unixsocket python3-termcolor python3-swiftclient python3-boto python3-azure-storage \
+        golang golang-go golang-doc golang-src \
+        make git python3 python3-requests-unixsocket python3-termcolor python3-swiftclient python3-boto3 python3-azure-storage \
         g++ python3-etcd3 python3-plyvel graphviz devscripts sudo dh-golang binutils-i686-linux-gnu binutils-aarch64-linux-gnu \
-        binutils-arm-linux-gnueabihf bash-completion zip ruby3.1-dev lintian npm \
+        binutils-arm-linux-gnueabihf bash-completion zip ruby-dev lintian npm \
         libc6-dev-i386-cross libc6-dev-armhf-cross libc6-dev-arm64-cross \
         gcc-i686-linux-gnu gcc-arm-linux-gnueabihf gcc-aarch64-linux-gnu && \
     apt-get clean && rm -rf /var/lib/apt/lists/*

system/t12_api/snapshots.py

@@ -355,7 +355,7 @@ class SnapshotsAPITestMerge(APITest):
         )
         self.check_equal(resp.status_code, 400)
         self.check_equal(
-            resp.json()["error"], "At least one source snapshot is required"
+            resp.json()["error"], "minimum one source snapshot is required"
         )
         self.check_equal(self.get(f"/api/snapshots/{merged_name}").status_code, 404)