github actions: drop manylinux_2_24

manylinux_2_24 depends on Debian stretch which is EOL and does not work
any more.

Use manylinux_2_28 instead.

Author: Jajcus

.github/workflows/ci.yml

@@ -232,7 +232,7 @@ jobs:
         name: wheelhouse-manylinux_2_17_i686
         path: wheelhouse
 
-  build-manylinux_2_24_x86_64:
+  build-manylinux_2_28_x86_64:
 
     needs:
       - test
@@ -247,17 +247,17 @@ jobs:
         fetch-depth: 0
 
     - name: Build and test ${{ matrix.manylinux-tag }} wheels
-      uses: docker://quay.io/pypa/manylinux_2_24_x86_64
+      uses: docker://quay.io/pypa/manylinux_2_28_x86_64
       with:
-        args: ./build-wheels.sh manylinux_2_24_x86_64
+        args: ./build-wheels.sh manylinux_2_28_x86_64
 
     - name: Upload artifacts
       uses: actions/upload-artifact@v2
       with:
-        name: wheelhouse-manylinux_2_24_x86_64
+        name: wheelhouse-manylinux_2_28_x86_64
         path: wheelhouse
 
-  build-manylinux_2_24_i686:
+  build-manylinux_2_28_i686:
 
     needs:
       - test
@@ -272,14 +272,14 @@ jobs:
         fetch-depth: 0
 
     - name: Build and test ${{ matrix.manylinux-tag }} wheels
-      uses: docker://quay.io/pypa/manylinux_2_24_i686
+      uses: docker://quay.io/pypa/manylinux_2_28_i686
       with:
-        args: linux32 ./build-wheels.sh manylinux_2_24_i686
+        args: linux32 ./build-wheels.sh manylinux_2_28_i686
 
     - name: Upload artifacts
       uses: actions/upload-artifact@v2
       with:
-        name: wheelhouse-manylinux_2_24_i686
+        name: wheelhouse-manylinux_2_28_i686
         path: wheelhouse
 
 
@@ -293,8 +293,8 @@ jobs:
       - build-manylinux_2_12_i686
       - build-manylinux_2_17_x86_64
       - build-manylinux_2_17_i686
-      - build-manylinux_2_24_x86_64
-      - build-manylinux_2_24_i686
+      - build-manylinux_2_28_x86_64
+      - build-manylinux_2_28_i686
 
     runs-on: ubuntu-latest