Backport of [CI-only] Update tagging for dev_tags into release/1.8.x

[hc-github-team-consul-core]

Backport

This PR is auto-generated from #13199 to be assessed for backporting due to the inclusion of the label backport/1.8.

WARNING automatic cherry-pick of commits failed. Commits will require human attention.

The below text is copied from the body of the original PR.

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Description

Small update to remove the hardcoded -dev suffix from dev_tags, which is causing tags to be in the format 1.12.0-dev-dev instead of just 1.12.0-dev. I'll clean up the old tags before making the dockerhub repo public, which will be available https://hub.docker.com/r/hashicorppreview/consul.

dev_tags were first introduced in #13084

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Name	Status	Preview	Updated
consul	❌ Failed (Inspect)		May 24, 2022 at 11:24PM (UTC)
consul-ui-staging	❌ Failed (Inspect)		May 24, 2022 at 11:24PM (UTC)

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[eculver]

1.8 is EOL now so I think we can just close this.

[mdeggies]

Thank you as always @eculver !!