Fix k3s versioning

Signed-off-by: Dimitris Karakasilis <dimitris@karakasilis.me>

.github/workflows/release.yaml

@@ -372,8 +372,9 @@ jobs:
       - name: Build 🔧
         run: |
           # Keep maximum k3s version (by semver)
+          # add a "v" in front and a "-k3s1" at the end to match the k3s versioning
           k3s_version=$(echo '${{ needs.get-standard-matrix.outputs.matrix }}' | \
-            jq -r '.include | map(.k3s_version) | unique | max_by(split("+")[0] | split(".") | map(tonumber))')
+            jq -r '.include | map(.k3s_version) | unique | max_by(split("+")[0] | split(".") | map(tonumber))' | sed -E 's/\+.*//; s/^/v/; s/$/-k3s1/')
 
           version=$(git describe --always --tags --dirty)