Fix release matrixes for amd64

Signed-off-by: Mauro Morales <mauro.morales@spectrocloud.com>

.github/workflows/release.yaml

@@ -19,7 +19,7 @@ jobs:
         sudo apt update && sudo apt install -y jq
     - id: set-matrix
       run: |
-          content=`cat .github/flavors.json`
+          content=`cat ./.github/flavors.json | jq -r 'map(select(.arch == "amd64" and .variant == "core"))'`
           # the following lines are only required for multi line json
           content="${content//'%'/'%25'}"
           content="${content//$'\n'/'%0A'}"
@@ -45,7 +45,7 @@ jobs:
           sudo mv luet /usr/bin/luet
           # Construct an array like this from the found versions:
           sudo luet --config framework-profile.yaml search -o json k8s/k3s  | jq '.packages | map(.version) | unique' >  k3s_versions.json
-          content=$(jq -s '. | [combinations | .[0] + {"k3s_version": .[1]}] | map(select(.variant == "standard"))' .github/flavors.json k3s_versions.json)
+          content=$(jq -s '. | [combinations | .[0] + {"k3s_version": .[1]}] | map(select(.arch == "amd64" and .variant == "standard"))' .github/flavors.json k3s_versions.json)
           # the following lines are only required for multi line json
           content="${content//'%'/'%25'}"
           content="${content//$'\n'/'%0A'}"