ci: avoid using the deprecated `set-env` construct

The `set-env` construct was deprecated as of the announcement in
https://github.blog/changelog/2020-10-01-github-actions-deprecating-set-env-and-add-path-commands/

Let's use the recommended alternative instead.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/.github/workflows/check-whitespace.yml b/.github/workflows/check-whitespace.yml
index 9d070b9cdff286770d99dd24da65b7af87aa53f4..c74b47de9e27e0d0b3c9b112344e140eb85d6798 100644 (file)
--- a/.github/workflows/check-whitespace.yml
+++ b/.github/workflows/check-whitespace.yml
@@ -14,7 +14,7 @@ jobs:
     steps:
     - name: Set commit count
       shell: bash
-      run: echo "::set-env name=COMMIT_DEPTH::$((1+$COMMITS))"
+      run: echo "COMMIT_DEPTH=$((1+$COMMITS))" >>$GITHUB_ENV
       env:
         COMMITS: ${{ github.event.pull_request.commits }}