Fix soundness errors

Author: award999

.github/workflows/nightly.yml

@@ -41,11 +41,11 @@ jobs:
           name: vscode-swift-extension
           path: |
             *.vsix
-        
+
   tests_release:
     name: Test Release
     needs: package
-    uses: award999/github-workflows/.github/workflows/swift_package_test.yml@token
+    uses: swiftlang/github-workflows/.github/workflows/swift_package_test.yml@main
     with:
       needs_token: true
       # Linux
@@ -71,7 +71,7 @@ jobs:
   tests_insiders:
     name: Test Insiders
     needs: package
-    uses: award999/github-workflows/.github/workflows/swift_package_test.yml@token
+    uses: swiftlang/github-workflows/.github/workflows/swift_package_test.yml@main
     with:
       needs_token: true
       # Linux

.github/workflows/scripts/setup-linux.sh

@@ -21,12 +21,13 @@ apt-get update && apt-get install -y rsync curl gpg libasound2 libgbm1 libgtk-3-
 
 mkdir -p $NVM_DIR
 curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.7/install.sh | bash
+# shellcheck disable=SC1091
 . $NVM_DIR/nvm.sh && nvm install $NODE_VERSION
 echo "$NODE_PATH" >> "$GITHUB_PATH"
 
 env | sort
 
-if [ ! -z "$VSCODE_SWIFT_VSIX_ID" ]; then
+if [ -n "$VSCODE_SWIFT_VSIX_ID" ]; then
     npm ci --ignore-scripts
     npx tsx scripts/download_vsix.ts
     export VSCODE_SWIFT_VSIX="vscode-swift.vsix"