Update CI Docker image

.github/ci-docker/Dockerfile

@@ -1,4 +1,4 @@
-FROM debian:stable-slim
+FROM ubuntu:mantic
 
 RUN apt-get -qq update \
   && apt-get install -y --no-install-recommends \

.github/workflows/lint.yml

@@ -11,7 +11,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     container:
-      image: darthsim/imgproxy-ci:202311211816
+      image: darthsim/imgproxy-ci:202404152040
     strategy:
       matrix:
         go-version: ["1.22.x"]

.github/workflows/test.yml

@@ -11,7 +11,7 @@ jobs:
   test:
     runs-on: ubuntu-latest
     container:
-      image: darthsim/imgproxy-ci:202311211816
+      image: darthsim/imgproxy-ci:202404152040
     strategy:
       matrix:
         go-version: ["1.22.x", "1.21.x"]