chore(deps): update docker.io/volkerraschek/markdownlint docker tag to v0.43.0

.drone.yml

@@ -50,7 +50,7 @@ steps:
 - name: unit-test
   commands:
   - go test -v ./...
-  image: docker.io/library/golang:1.23
+  image: docker.io/library/golang:1.22
   resources:
     limits:
       cpu: 250

Dockerfile

@@ -11,7 +11,7 @@ RUN set -ex && \
     apk add git make && \
     make install VERSION=${VERSION} DESTDIR=/civ PREFIX=/usr
 
-FROM docker.io/library/alpine:3.21
+FROM docker.io/library/alpine:3.19
 
 COPY --from=build /civ /