fix set-output deprecation warnings (#330)

Author: RRosio

.github/workflows/check-release.yml

@@ -27,7 +27,7 @@ jobs:
       - name: Get pip cache dir
         id: pip-cache
         run: |
-          echo "::set-output name=dir::$(pip cache dir)"
+          echo "dir=$(pip cache dir)" >> "$GITHUB_OUTPUT"
       - name: Cache pip
         uses: actions/cache@v4
         with:

.github/workflows/docs.yml

@@ -31,7 +31,7 @@ jobs:
     - name: Get pip cache dir
       id: pip-cache
       run: |
-        echo "::set-output name=dir::$(pip cache dir)"
+        echo "dir=$(pip cache dir)" >> "$GITHUB_OUTPUT"
     - name: Cache pip
       uses: actions/cache@v4
       with: