This patch fixes quote nesting in format strings in a way that's compatible with
Python 3.11.  A larger cleanup patch [1] applies some of these hunks upstream.

[1] https://codeberg.org/valos/Komikku/commit/e76766c6012d9d5c18c2c3bbaa7dfc11a6ee2d77

diff --git a/komikku/card/tracking.py b/komikku/card/tracking.py
index ce333780..76119e20 100644
--- a/komikku/card/tracking.py
+++ b/komikku/card/tracking.py
@@ -279,7 +279,7 @@ class TrackerRow(Adw.ExpanderRow):
             self.set_expanded(True)
             self.set_arrow_visible(True)
             self.btn.set_visible(False)
-            self.action_row.set_title(f'<a href="{self.tracker.get_manga_url(data['id'])}">{html_escape(data["name"])}</a>')
+            self.action_row.set_title(f'<a href="{self.tracker.get_manga_url(data["id"])}">{html_escape(data["name"])}</a>')
 
             with self.chapters_progress_row.handler_block(self.num_chapter_changed_handler_id):
                 adj = Gtk.Adjustment(
-- 
diff --git a/komikku/servers/mangalib/__init__.py b/komikku/servers/mangalib/__init__.py
index b631f617..c48c1cf2 100644
--- a/komikku/servers/mangalib/__init__.py
+++ b/komikku/servers/mangalib/__init__.py
@@ -124,9 +124,9 @@ class Mangalib(Server):
                 for team in branch['teams']:
                     scanlators.append(team['name'])
 
             data['chapters'].append(dict(
-                slug=f'v{chapter['volume']}/c{chapter['number']}',
+                slug=f'v{chapter["volume"]}/c{chapter["number"]}',
                 title=f'Том {chapter["volume"]} Глава {chapter["number"]} - {chapter["name"]}',
                 num=chapter['number'] if is_number(chapter['number']) else None,
                 num_volume=chapter['volume'] if is_number(chapter['volume']) else None,
                 date=convert_date_string(date, format='%Y-%m-%d') if date else None,
diff --git a/komikku/servers/perfscan/__init__.py b/komikku/servers/perfscan/__init__.py
index 8d77c131..ea9df5e4 100644
--- a/komikku/servers/perfscan/__init__.py
+++ b/komikku/servers/perfscan/__init__.py
@@ -69,7 +69,7 @@ class Perfscan(Server):
         ))
 
         data['name'] = resp_data['title']
-        data['cover'] = f'{self.media_url}/{resp_data['cover']}'
+        data['cover'] = f'{self.media_url}/resp_data["cover"]}'
 
         if resp_data.get('author'):
             data['authors'].append(resp_data['author'])
@@ -95,7 +95,7 @@ class Perfscan(Server):
         for chapter in resp_data.get('Chapter'):
             title = chapter['title'].strip()
             if title in (None, '', '-'):
-                title = f'Chapitre {chapter['index']}'
+                title = f'Chapitre {chapter["index"]}'
 
             data['chapters'].append({
                 'slug': chapter['id'],