fix(action): explicitly resolve 'latest' version tag

The previous logic for detecting the 'latest' weld version relied on 'gh release download' interpreting an empty tag argument as the latest release. This was causing issues in consumer workflows, as it was seemingly looking for a literal 'latest' tag.

This commit updates the 'Get Version Tag for Download' step to explicitly query the GitHub API for the actual tag name of the latest release when 'weld-version' is set to 'latest'. This ensures a concrete tag is always provided to the download command, making the action more robust.

action.yml

@@ -25,10 +25,18 @@ runs:
     - name: Get Version Tag for Download
       id: get_version
       shell: bash
+      env:
+        GH_TOKEN: ${{ inputs.github-token }}
       run: |
         VERSION_TAG=""
-        if [[ "${{ inputs.weld-version }}" != "latest" ]]; then
+        if [[ "${{ inputs.weld-version }}" == "latest" ]]; then
+          echo "Figuring out the latest version..."
+          # Get the tag name of the latest release from the specified repo
+          VERSION_TAG=$(gh release view --repo ${{ inputs.repo }} --json tagName --jq .tagName)
+          echo "Latest version is ${VERSION_TAG}"
+        else
           VERSION_TAG="${{ inputs.weld-version }}"
+          echo "Using specified version ${VERSION_TAG}"
         fi
         echo "tag=${VERSION_TAG}" >> $GITHUB_OUTPUT