Add Pharo64-12, Pharo64-13, and Pharo64-14 to matrix

Let's try to do #8

Author: SergeStinckwich

.github/workflows/test.yml

@@ -10,7 +10,7 @@ jobs:
       PROJECT_NAME: MathVectorMatrix-${{ matrix.smalltalk }}
     strategy:
       matrix:
-        smalltalk: [ Pharo64-9.0, Pharo64-10, Pharo64-11 ]
+        smalltalk: [ Pharo64-9.0, Pharo64-10, Pharo64-11 Pharo64-12 Pharo64-13 Pharo64-14]
     name: ${{ matrix.smalltalk }}
     steps:
       - uses: actions/checkout@v3
@@ -19,4 +19,4 @@ jobs:
           smalltalk-image: ${{ matrix.smalltalk }}
       - run: smalltalkci -s ${{ matrix.smalltalk }}
         shell: bash
-        timeout-minutes: 15
+        timeout-minutes: 15