replace set-output with modern syntax

.github/workflows/release.yml

@@ -28,10 +28,11 @@ jobs:
         id: galaxy_yml_version
         run: |
           import yaml
+          import os
           with open('galaxy.yml', 'r') as file:
             data = yaml.safe_load(file)
-            print(f"version={data['version']}")
-            print(f"::set-output name=value::{data['version']}")
+            with open(os.environ['GITHUB_OUTPUT'], 'a') as output_file:
+              output_file.write(f"{value}={data['version']}\n")
         shell: "python"
 
       - name: "Compare with latest git tag"
@@ -40,9 +41,9 @@ jobs:
           latest_tag=$(git describe --tags --abbrev=0 2>/dev/null || echo 'v0.0.0')
 
           if [[ "${{ steps.galaxy_yml_version.outputs.value }}" != "$latest_tag" ]]; then
-            echo "::set-output name=value::true"
+            echo "{value}={true}" >> $GITHUB_OUTPUT
           else
-            echo "::set-output name=value::false"
+            echo "{value}={false}" >> $GITHUB_OUTPUT
           fi
 
   publish: