Update CI workflows to zed@82dedcbc6c (#6)

This PR updates the CI workflow files from the main Zed repository
based on the commit
zed-industries/zed@82dedcb

Co-authored-by: zed-zippy[bot] <234243425+zed-zippy[bot]@users.noreply.github.com>

Author: zed-zippy[bot]

.github/workflows/run_tests.yml

@@ -16,3 +16,6 @@ jobs:
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref_name }}-${{ github.ref_name == 'main' && github.sha || 'anysha' }}pr
   cancel-in-progress: true
+defaults:
+  run:
+    shell: bash -euxo pipefail {0}