GHA: Default to bash shell for main & supported-LLVM-versions workflows #2254

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10 errors

/home/runner/work/ldc/ldc/./.github/actions/1-setup/action.yml (Line: 13, Col: 7): Required property is missing: shell

/home/runner/work/ldc/ldc/./.github/actions/1-setup/action.yml (Line: 28, Col: 7): Required property is missing: shell

/home/runner/work/ldc/ldc/./.github/actions/1-setup/action.yml (Line: 39, Col: 7): Required property is missing: shell

/home/runner/work/ldc/ldc/./.github/actions/1-setup/action.yml (Line: 51, Col: 7): Required property is missing: shell

/home/runner/work/ldc/ldc/./.github/actions/1-setup/action.yml (Line: 95, Col: 7): Required property is missing: shell

/home/runner/work/ldc/ldc/./.github/actions/1-setup/action.yml (Line: 109, Col: 7): Required property is missing: shell

/home/runner/work/ldc/ldc/./.github/actions/1-setup/action.yml (Line: 113, Col: 7): Required property is missing: shell

/home/runner/work/ldc/ldc/./.github/actions/1-setup/action.yml (Line: 130, Col: 7): Required property is missing: shell

/home/runner/work/ldc/ldc/./.github/actions/1-setup/action.yml (Line: 151, Col: 7): Required property is missing: shell

/home/runner/work/ldc/ldc/./.github/actions/1-setup/action.yml (Line: 155, Col: 7): Required property is missing: shell