Fix syntax

Author: mhucka

.github/actions/set-up-bazelisk/action.yaml

@@ -35,18 +35,14 @@ permissions:
   actions: write
   contents: read
 
-env:
-  debug: ${{inputs.debug || runner.debug}}
-  bazel-cache: ~/.cache/bazel
-
 runs:
   using: 'composite'
   steps:
     - name: Set environment variables
       shell: bash
-      SHELLOPTS: ${{env.debug && 'xtrace' || ''}}
+      SHELLOPTS: ${{(inputs.debug || runner.debug) && 'xtrace' || ''}}
       run: |
-        version=""
+        echo "bazel_cache=$HOME/.cache/bazel" >> "$GITHUB_ENV"
         if [[ -n "${{inputs.bazel-version}}" ]]; then
           version="${{inputs.bazel-version}}"
         elif [[ -f ".bazelversion" ]]; then
@@ -59,7 +55,7 @@ runs:
 
     - name: Install Bazelisk
       env:
-        BAZELISK_SHOW_PROGRESS: ${{env.debug}}
+        BAZELISK_SHOW_PROGRESS: ${{inputs.debug || runner.debug}}
       shell: bash
       run: npm install @bazel/bazelisk
 
@@ -119,7 +115,7 @@ runs:
         } >> .bazelrc
 
     - name: Print configuration information
-      if: env.debug
+      if: ${{inputs.debug || runner.debug}}
       shell: bash
       run: |
         bazelisk --version