ci(docker): Fix GHA input name: s/build_args/build-args/

Author: erikmd

.github/workflows/deploy-master.yml

@@ -111,7 +111,7 @@ jobs:
           pull: false # because of the previous "load: true"
           push: true
           context: ci/docker-emacs-learn-ocaml-client
-          build_args: "base=ocamlsf/learn-ocaml-client,version=master"
+          build-args: "base=ocamlsf/learn-ocaml-client,version=master"
           tags: "ocamlsf/emacs-learn-ocaml-client:master"
           labels: |
             org.opencontainers.image.created=${{ steps.prep.outputs.created }}

.github/workflows/release.yml

@@ -243,7 +243,7 @@ jobs:
           pull: false # because of the previous "load: true"
           push: true
           context: ci/docker-emacs-learn-ocaml-client
-          build_args: "base=ocamlsf/learn-ocaml-client,version=${{ steps.tag.outputs.tag }}"
+          build-args: "base=ocamlsf/learn-ocaml-client,version=${{ steps.tag.outputs.tag }}"
           tags: |
             ocamlsf/emacs-learn-ocaml-client:latest
             ocamlsf/emacs-learn-ocaml-client:${{ steps.tag.outputs.tag }}