ci: bump docker/build-push-action from 5.3.0 to 6.7.0#893

dependabot[bot] wants to merge 1 commit intomasterstreamr-dev/network-contracts:masterfrom

dependabot/github_actions/docker/build-push-action-6.7.0streamr-dev/network-contracts:dependabot/github_actions/docker/build-push-action-6.7.0Copy head branch name to clipboard