Fix test.yml error

Author: mcecode

.github/workflows/test.yml

@@ -33,7 +33,7 @@ jobs:
       # Prevent `No usable sandbox!` error on Ubuntu. See:
       # https://github.com/puppeteer/puppeteer/issues/13595
       - name: Disable AppArmor
-        if: ${{ matrix.os == ubuntu-latest }}
+        if: ${{ matrix.os == 'ubuntu-latest' }}
         run:
           echo 0 | sudo tee
           /proc/sys/kernel/apparmor_restrict_unprivileged_userns