fix output

.github/actions/install-openssl/action.yml

@@ -1,6 +1,10 @@
 name: Install OpenSSL
 description: 'Install OpenSSL >= 3 if not already present.'
 
+outputs:
+  OPENSSL_ROOT_DIR:
+    description: The location of the installed OpenSSL.
+    value: ${{ steps.determine-root.outputs.OPENSSL_ROOT_DIR }}
 runs:
   using: composite
   steps:
@@ -18,7 +22,7 @@ runs:
       shell: bash
       run: |
         echo "OpenSSL Prefix: $(brew --prefix openssl@3)"
-        echo "OPENSSL_ROOT_DIR=$(brew --prefix openssl@3)" >> "$GITHUB_ENV"
+        echo "OPENSSL_ROOT_DIR=$(brew --prefix openssl@3)" >> $GITHUB_OUTPUT
 
     # The Windows runner has an older version of OpenSSL and needs to be upgraded.
     # Additionally, it seems to randomly be installed in OpenSSL-Win64 or OpenSSL depending on
@@ -30,9 +34,9 @@ runs:
       run: |
         choco upgrade openssl --no-progress
         if [ -d "C:\Program Files\OpenSSL-Win64" ]; then
-          echo "OPENSSL_ROOT_DIR=C:\Program Files\OpenSSL-Win64" >> "$GITHUB_ENV"
+          echo "OPENSSL_ROOT_DIR=C:\Program Files\OpenSSL-Win64" >> $GITHUB_OUTPUT
         else
-          echo "OPENSSL_ROOT_DIR=C:\Program Files\OpenSSL" >> "$GITHUB_ENV"
+          echo "OPENSSL_ROOT_DIR=C:\Program Files\OpenSSL" >> $GITHUB_OUTPUT
         fi
 
     - name: Determine root