CI: really working ccache? 2

.github/workflows/ficus.yml

@@ -2,9 +2,9 @@ name: Ficus build
 
 on:
   push:
-    branches: ["main"]
+    branches: [ "main" ]
   pull_request:
-    branches: ["main"]
+    branches: [ "main" ]
 
 env:
   BUILD_TYPE: Debug
@@ -34,7 +34,8 @@ jobs:
 
       - name: Add ccache to path
         run: |
-          export PATH="/usr/lib/ccache:/usr/local/opt/ccache/libexec:$PATH"
+          echo "/usr/lib/ccache" >> $GITHUB_PATH
+          echo "/usr/local/opt/ccache/libexec" >> $GITHUB_PATH
 
       - name: Print ccache info
         run: |