Add python 3.11 to blenderbim build matrix

.github/workflows/ci-blenderbim-matrix.yml

@@ -39,7 +39,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        pyver: [py39, py310]
+        pyver: [py39, py310, py311]
         config:
           - {
             name: "Windows Build",
@@ -62,7 +62,7 @@ jobs:
       - uses: actions/setup-python@v2 # https://github.com/actions/setup-python
         with:
           architecture: 'x64' # optional x64 or x86. Defaults to x64 if not specified
-          python-version: '3.10'
+          python-version: '3.11'
       - run: echo ${{ env.DATE }}
       - name: Get current date
         id: date