Fix CI workflows

Author: sevein

.github/workflows/pr.yml

@@ -13,5 +13,3 @@ concurrency:
 jobs:
   tests:
     uses: ./.github/workflows/tests.yml
-    with:
-      target_sha: ${{ github.event.pull_request.head.sha }}

.github/workflows/release.yml

@@ -30,8 +30,6 @@ jobs:
 
   tests:
     uses: ./.github/workflows/tests.yml
-    with:
-      target_sha: ${{ github.sha }}
 
   release:
     name: Release