fix: disable generation of latest tag

Latest tag is not something we use and its use is discouraged.
Also, dependent jobs expect that this action only ever creates
one tag per image, and creating latest as well as a named tag
breaks that assumption.

Author: mhaley-tignis

action.yml

@@ -60,6 +60,8 @@ runs:
       with:
         # list of Docker images to use as base name for tags
         images: ${{ inputs.images }}
+        flavor: |
+          latest=false
         # generate Docker tags based on the following events/attributes
         tags: |
           type=sha,prefix=${{inputs.tag-prefix}}${{env.BRANCH_NAME}}-${{env.DATE}}-${{github.run_number}}-,enable=${{ !startsWith(github.event_name, 'release') }}