Backport of GHA: Get the consul version from values.yaml into release/1.1.x

[hc-github-team-consul-core]

Backport

This PR is auto-generated from #2146 to be assessed for backporting due to the inclusion of the label backport/1.1.x.

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

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Changes proposed in this PR:

• The release branches are running the wrong version of consul in the tests.
• This let's us run make consul-version to pull the consul version out of the values.yaml file so that we can use the correct consul version on the release branches.
• I will do a change on the github actions side once this is merged and backported

How I've tested this PR:

• Ran the make target locally (yq is installed on the runners so it should succeed there too)

How I expect reviewers to test this PR:

👀

Checklist:

• Tests added
• CHANGELOG entry added

  HashiCorp engineers only, community PRs should not add a changelog entry.
  Entries should use present tense (e.g. Add support for...)

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Overview of commits

• 3fdcf96