Merge branch 'ab/ci-musl-bash-fix' into maint-2.38

CI fix.

* ab/ci-musl-bash-fix:
  CI: don't explicitly pick "bash" shell outside of Windows, fix regression

Author: gitster

.github/workflows/main.yml

@@ -261,10 +261,8 @@ jobs:
     - uses: actions/checkout@v3
     - run: ci/install-dependencies.sh
     - run: ci/run-build-and-tests.sh
-    - name: print test failures
+    - run: ci/print-test-failures.sh
       if: failure() && env.FAILED_TEST_ARTIFACTS != ''
-      shell: bash
-      run: ci/print-test-failures.sh
     - name: Upload failed tests' directories
       if: failure() && env.FAILED_TEST_ARTIFACTS != ''
       uses: actions/upload-artifact@v2
@@ -297,10 +295,8 @@ jobs:
       if: matrix.vector.jobname == 'linux32'
     - run: ci/install-docker-dependencies.sh
     - run: ci/run-build-and-tests.sh
-    - name: print test failures
+    - run: ci/print-test-failures.sh
       if: failure() && env.FAILED_TEST_ARTIFACTS != ''
-      shell: bash
-      run: ci/print-test-failures.sh
     - name: Upload failed tests' directories
       if: failure() && env.FAILED_TEST_ARTIFACTS != ''
       uses: actions/upload-artifact@v1