fix: switch to epub3-to-daisy202, add continue-on-error for DAISY/BRF

DAISY 3 talking book requires TTS audio engine (not available in CI).
DAISY 2.02 text-only is widely supported and doesn't need TTS.
continue-on-error ensures EPUB+Word always upload successfully.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: taylorarndt

.github/workflows/build-epub.yml

@@ -53,14 +53,16 @@ jobs:
             sleep 2
           done
 
-      - name: Convert EPUB to DAISY (talking book)
+      - name: Convert EPUB to DAISY 2.02 (text-only talking book)
+        continue-on-error: true
         run: |
           mkdir -p epub/daisy
-          pipeline2/daisy-pipeline/cli/dp2 epub3-to-daisy3 \
+          pipeline2/daisy-pipeline/cli/dp2 epub3-to-daisy202 \
             --source epub/git-going-with-github.epub \
             --output epub/daisy/
 
       - name: Convert EPUB to BRF (Braille)
+        continue-on-error: true
         run: |
           mkdir -p epub/brf
           pipeline2/daisy-pipeline/cli/dp2 epub3-to-pef \