Replace deprecated ::set-output (#26)

As per the deprecation warning and explanation at
https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

Signed-off-by: Dominik Gedon <[email protected]>

Author: nodeg

.github/workflows/test.yml

@@ -27,7 +27,7 @@ jobs:
         run: |
           version=0.0.$GITHUB_RUN_NUMBER
           echo "ThisBuild / version := \"$version\"" > version.sbt
-          echo "::set-output name=version::$version"
+          echo "version=$version" >> $GITHUB_OUTPUT
         working-directory: "test"
       - name: Test the action
         uses: ./

CHANGELOG.md

@@ -9,7 +9,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
-- Fix test workflow to use `sbt/setup-sbt` action
+- test: Fix test workflow to use `sbt/setup-sbt` action
+- test: Replace deprecated `::set-output`
 
 ## [v1.0.1]