chore(deps): update alpine/curl docker digest to c842d70 (#663)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

test/integration/docker-compose-netolly-rdns.yml

@@ -2,7 +2,7 @@ version: '3.8'
 
 services:
   curler:
-    image: alpine/curl@sha256:6c1b9eb88d25e3dc56c02bba99e1b44b3a0612123a7c287b04f3aafd89c534d6
+    image: alpine/curl@sha256:c842d704500f0e474157fc1652b01cff239992eab854c84d9f4551f049e23160
     command:
       - sh
       - -c