chore: use data from previous step

Author: samrose

.github/workflows/dockerhub-release-matrix.yml

@@ -159,6 +159,7 @@ jobs:
           docker buildx imagetools create -t ${{ env.pg_version }} \
           ${{ env.pg_version }}_amd64 \
           ${{ env.pg_version }}_arm64
+
   get_publish_version:
     needs: [prepare, merge_manifest]
     strategy:
@@ -169,22 +170,18 @@ jobs:
       matrix: ${{ steps.get_versions.outputs.matrix }}
     steps:
       - uses: actions/checkout@v3
-      - name: Get versions
+      - name: Get version
         id: get_versions
         run: |
           nu -c '
-            let versions = ${{ fromJson(needs.prepare.outputs.matrix_config).include | select(.version) | to array }}
-            let versions_array = ($versions | each { |ver|
-              let version = $ver.version
-              let release_key = if ($version | str contains "orioledb") {
-                $"postgres($version | str replace "-" "")"
-              } else {
-                $"postgres($version)"
-              }
-              let pg_version = (open ansible/vars.yml | get postgres_release | get $release_key | str trim)
-              {version: $pg_version}
-            })
-            let matrix = {include: $versions_array}
+            let version = "${{ matrix.version }}"
+            let release_key = if ($version | str contains "orioledb") {
+              $"postgres($version | str replace "-" "")"
+            } else {
+              $"postgres($version)"
+            }
+            let pg_version = (open ansible/vars.yml | get postgres_release | get $release_key | str trim)
+            let matrix = {include: [{version: $pg_version}]}
             $"matrix=($matrix | to json)" | save --append $env.GITHUB_OUTPUT
           '