Fix actionlint SC2086: double-quote $GITHUB_ENV in test.yml (#121)

* Initial plan

* Fix SC2086: double-quote $GITHUB_ENV in test.yml to fix actionlint error

Co-authored-by: tangrufus <2259834+tangrufus@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: tangrufus <2259834+tangrufus@users.noreply.github.com>

Author: Copilot

.github/workflows/test.yml

@@ -168,8 +168,8 @@ jobs:
         with:
           go-version-file: 'go.mod'
 
-      - run: echo OS="$(go env GOOS)" >> $GITHUB_ENV
-      - run: echo ARCH="$(go env GOARCH)" >> $GITHUB_ENV
+      - run: echo OS="$(go env GOOS)" >> "$GITHUB_ENV"
+      - run: echo ARCH="$(go env GOARCH)" >> "$GITHUB_ENV"
 
       - uses: actions/download-artifact@v7
         with: