build: fix presubmit and generator test (#827)

Author: miguelvelezsa

.github/workflows/continuous.yaml

@@ -63,8 +63,8 @@ jobs:
     - name: Get changed files
       id: changed-files
       uses: tj-actions/changed-files@24d32ffd492484c1d75e0c0b894501ddb9d30d62 # v47.0.0
+      working-directory: /github/workspace
       with:
-        path: /github/workspace
         files: generator/**
 
     - name: Cache Bazel files

.github/workflows/presubmit.yaml

@@ -49,7 +49,8 @@ jobs:
 
     - name: Get changed files
       id: changed-files
-      uses: tj-actions/changed-files@v44
+      uses: tj-actions/changed-files@v47
+      working-directory: /github/workspace
       with:
         files: generator/**