Specify bash when running shell commands

Author: istathar

.github/workflows/release.yaml

@@ -19,6 +19,7 @@ jobs:
               uses: actions/checkout@v3
 
             - name: Validate toolchain
+              shell: bash
               run: |
                   echo "RUST_VERSION=$(rustc --version | cut -d ' ' -f 2)" >> ${GITHUB_ENV}
 
@@ -40,6 +41,7 @@ jobs:
 
             - name: Prepare target name
               id: prepare
+              shell: bash
               run: |
                   case "${{ runner.os }}" in
                       Linux)