use bash as shell for buster CI job

Author: ardera

.github/workflows/cmake.yml

@@ -48,10 +48,10 @@ jobs:
 
       - name: Build
         # Build your program with the given configuration
-        run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+        run: cmake --build ${{ github.workspace }}/build --config ${{ env.BUILD_TYPE}}
 
       - name: Test
-        working-directory: ${{github.workspace}}/build
+        working-directory: ${{ github.workspace }}/build
         # Execute tests defined by the CMake configuration.
         # See https://cmake.org/cmake/help/latest/manual/ctest.1.html for more detail
         run: ctest -C ${{env.BUILD_TYPE}}
@@ -63,6 +63,9 @@ jobs:
       image: debian:buster
       env:
         DEBIAN_FRONTEND: noninteractive
+    defaults:
+      run:
+        shell: bash
     steps:
       - name: Install dependencies
         run: |
@@ -93,7 +96,7 @@ jobs:
         run: cmake --build ${{ github.workspace }}/build --config ${{ env.BUILD_TYPE }}
 
       - name: Test
-        working-directory: ${{github.workspace}}/build
+        working-directory: ${{ github.workspace }}/build
         # Execute tests defined by the CMake configuration.
         # See https://cmake.org/cmake/help/latest/manual/ctest.1.html for more detail
-        run: ctest -C ${{env.BUILD_TYPE}}
+        run: ctest -C ${{ env.BUILD_TYPE }}