[CI] new docker image version

.gitlab-ci.yml

@@ -25,8 +25,9 @@ variables:
 tests:
   stage: test
   extends: .build-matrix # defines OCAML_COMPILER
+  #docker manifest inspect ocaml/opam:debian-11-ocaml-4.14 | jq '.manifests| .[] | select(.platform.architecture == "amd64") | .digest' --raw-output
   #ocaml/opam:debian-11-ocaml-4.13
-  image: ocaml/opam@sha256:b83b5d2b44b2fdad29e086e78ae5004fb3b864973b271a66f078acc51e73e5e4
+  image: ocaml/opam@sha256:c3acec02c2720d11cb3789700c199a898e83e4b42638fd00c26e5e5252fc4f46
   cache:
     # https://docs.gitlab.com/ee/ci/yaml/#cache
     key: $OCAML_COMPILER-debian
@@ -53,7 +54,7 @@ generate-static:
   stage: test
   extends: .build-matrix # defines OCAML_COMPILER
   # ocaml/opam:alpine-ocaml-4.13
-  image: ocaml/opam@sha256:29fbef87c4a77d0c25bf000997f8f9dba6ab1b30b23944b31517bfa2a75cbdb1
+  image: ocaml/opam@sha256:fc03bda1598542dfa3fbedc7734cc6c256fb26909506ae7ffb127f5f6ff50683
   cache:
     # https://docs.gitlab.com/ee/ci/yaml/#cache
     key: $OCAML_COMPILER-alpine