ci: tweak diff

.github/workflows/end-to-end-tests.yml

@@ -43,7 +43,8 @@ jobs:
             false; \
           fi
       - name: make sure bundling works
+        shell: bash
         run: |
           npx nx bundle web-component
           git status
-          git diff -w --word-diff
+          git diff --word-diff=porcelain --word-diff-regex=... --color | perl -ple 's/^(\x1b[^ -+]{0,6})? (.{81,})$/$1 . " " . substr($2, 0, 40) . " [... " . (length($2)-80) . " bytes ...] " . substr($2, -40)/ex'