Update test.yml

Drop p11 and add P13

Author: tinchodias

.github/workflows/test.yml

@@ -13,7 +13,7 @@ jobs:
       # Default value means that a failure in one OS cancels all 
       fail-fast: false
       matrix:
-        smalltalk: [ Pharo64-11, Pharo64-12 ]
+        smalltalk: [ Pharo64-12, Pharo64-13 ]
         os: [ ubuntu-latest, macos-latest, windows-latest ]
         ston: [ .ci.ston ]
     runs-on: ${{ matrix.os }}
@@ -31,4 +31,4 @@ jobs:
         shell: bash
         timeout-minutes: 10
         env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}