fix(ci): don't commit temp files to interop update PR (#3022)

Author: WesleyRosenblum

.github/workflows/interop_required.yml

@@ -29,9 +29,9 @@ jobs:
           python3 .github/interop/update_required.py \
             --commits 50 \
             --dry-run \
-            2>check_stderr.txt || true
+            2>${{ runner.temp }}/check_stderr.txt || true
 
-          if grep -q "Found .* new entries" check_stderr.txt; then
+          if grep -q "Found .* new entries" ${{ runner.temp }}/check_stderr.txt; then
             echo "has_updates=true" >> $GITHUB_OUTPUT
           else
             echo "has_updates=false" >> $GITHUB_OUTPUT
@@ -42,15 +42,15 @@ jobs:
         run: |
           python3 .github/interop/update_required.py \
             --commits 50 \
-            --pr-description > pr_description.txt
+            --pr-description > ${{ runner.temp }}/pr_description.txt
 
       - name: Create pull request
         if: steps.check.outputs.has_updates == 'true'
         uses: peter-evans/create-pull-request@v8
         with:
           commit-message: "chore(interop): update required interop checks"
           title: "chore(interop): update required interop checks"
-          body-path: pr_description.txt
+          body-path: ${{ runner.temp }}/pr_description.txt
           branch: interop/update-required
           delete-branch: true
           labels: ci