Revert "try simplify lambda deployment CI"

This reverts commit 9c15f24.

.github/workflows/deploy-all-lambdas.yml

@@ -31,9 +31,9 @@ jobs:
           git clone https://github.com/${{ github.repository }}
           cd ${{ github.event.repository.name }}
           git checkout ${{ github.sha }}
-          echo "GITHUB_WORKSPACE=$GITHUB_WORKSPACE/${{ github.event.repository.name }}" >> $GITHUB_ENV
 
       - name: Find package names
+        working-directory: ${{ github.event.repository.name }}
         id: find_package_names
         run: |
           echo "names=$(
@@ -48,6 +48,7 @@ jobs:
           )" >> $GITHUB_OUTPUT
 
       - name: Build and package
+        working-directory: ${{ github.event.repository.name }}
         run: |
           mkdir zips
           for name in ${{ steps.find_package_names.outputs.names }}; do
@@ -61,6 +62,7 @@ jobs:
           done
 
       - name: Deploy
+        working-directory: ${{ github.event.repository.name }}
         run: |
           for name in ${{ steps.find_package_names.outputs.names }}; do
             aws lambda update-function-code \