chore: upgrade action-translation to v0.16.1 (zh-cn, fa, fr)

zh-cn and fa move v0.15.0 -> v0.16.1; fr moves v0.16.0 -> v0.16.1.

For zh-cn and fa this is also the Sonnet 4.6 -> Sonnet 5 default model
change from v0.16.0, which they had not picked up. Validated before this
bump: the 26-scenario e2e harness ran v0.16.1 + Sonnet 5 against both
zh-cn and fa, producing correct PRs for all 26 in each language, and
quality was graded against the December Sonnet 4.5 baseline —
9.4/10 translation and 10/10 diff, versus 9.5 and 10 for the baseline.

Also in v0.16.1: API pagination (PRs touching >30 files were silently
synced in part), truncation detection (a cut-off translation was
committed rather than failing), an empty-response guard, and the French
typography fix for footnote/link-reference definitions.

See QuantEcon/action-translation#83 and the v0.16.1 release notes.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: mmcky

.github/workflows/sync-translations-fa.yml

@@ -24,7 +24,7 @@ jobs:
         with:
           fetch-depth: 2
 
-      - uses: QuantEcon/action-translation@v0.15.0
+      - uses: QuantEcon/action-translation@v0.16.1
         with:
           mode: sync
           target-repo: QuantEcon/lecture-python-programming.fa

.github/workflows/sync-translations-fr.yml

@@ -24,7 +24,7 @@ jobs:
         with:
           fetch-depth: 2
 
-      - uses: QuantEcon/action-translation@v0.16.0
+      - uses: QuantEcon/action-translation@v0.16.1
         with:
           mode: sync
           target-repo: QuantEcon/lecture-python-programming.fr

.github/workflows/sync-translations-zh-cn.yml

@@ -24,7 +24,7 @@ jobs:
         with:
           fetch-depth: 2
 
-      - uses: QuantEcon/action-translation@v0.15.0
+      - uses: QuantEcon/action-translation@v0.16.1
         with:
           mode: sync
           target-repo: QuantEcon/lecture-python-programming.zh-cn