Install binary blosc wheels in ci workflows

.github/workflows/ci-linux.yaml

@@ -25,6 +25,7 @@ jobs:
       - name: Install numcodecs
         run: |
           python -m pip install -U pip -r requirements_test.txt -r requirements.txt
+          python -m pip install -U --only-binary blosc blosc
           python -m pip install -v -e .
 
       - name: List installed packages

.github/workflows/ci-osx.yaml

@@ -31,6 +31,7 @@ jobs:
           conda activate env
           which pip
           pip install -r requirements_test.txt -r requirements.txt
+          pip install -U --only-binary blosc blosc
           conda env export
 
       - name: Install numcodecs

.github/workflows/ci-windows.yaml

@@ -31,6 +31,7 @@ jobs:
           conda activate env
           which pip
           pip install -r requirements_test.txt -r requirements.txt
+          pip install -U --only-binary blosc blosc
           conda env export
 
       - name: Install numcodecs