ci: delete shell option

Author: sevenbunu

.github/workflows/self-hosted.yml

@@ -66,7 +66,6 @@ jobs:
         working-directory: ${{ env.build_dir }}
         run: |
           bash scripts/run_tests_all.sh | tee ${{ env.unit-test-file }}
-        shell: bash
 
       - name: Upload unit tests resutls
         uses: actions/upload-artifact@v4
@@ -83,7 +82,6 @@ jobs:
         working-directory: ${{ env.build_dir }}/python
         run: |
           bash run_tests.sh 2>&1 | tee ${{ env.regression-test-file }}
-        shell: bash
 
       - name: Upload regression tests resutls
         uses: actions/upload-artifact@v4

.github/workflows/ubuntu.yml

@@ -74,7 +74,6 @@ jobs:
         working-directory: ${{ env.build_dir }}
         run: |
           bash scripts/run_tests_all.sh | tee ${{ env.unit-test-file }}
-        shell: bash
 
       - name: Upload unit tests resutls
         uses: actions/upload-artifact@v4
@@ -91,7 +90,6 @@ jobs:
         working-directory: ${{ env.build_dir }}/python
         run: |
           bash run_tests.sh 2>&1 | tee ${{ env.regression-test-file }}
-        shell: bash
 
       - name: Upload regression tests resutls
         uses: actions/upload-artifact@v4