build: fix publishing step (#1495)

After adding the Android support the CI fails on tags because cargo publish was being run
on linux GNU and linux Android.

.github/workflows/ci.yml

@@ -257,6 +257,7 @@ jobs:
  startsWith(github.ref, 'refs/tags/') &&
  github.repository == 'denoland/rusty_v8' &&
  startsWith(matrix.config.target , 'x86_64') &&
+ !endsWith(matrix.config.target , 'android') &&
  matrix.config.variant == 'debug' &&
  runner.os == 'Linux'
  env: