fix: use Arial Bold on macOS to avoid Helvetica.ttc rendering bugs in Pillow

Made-with: Cursor

src/cover.py

@@ -16,6 +16,14 @@ def _get_font(size: int) -> ImageFont.FreeTypeFont:
         )
     except OSError:
         pass
+    try:
+        return ImageFont.truetype("/System/Library/Fonts/Supplemental/Arial Bold.ttf", size)
+    except OSError:
+        pass
+    try:
+        return ImageFont.truetype("/Library/Fonts/Arial Bold.ttf", size)
+    except OSError:
+        pass
     try:
         return ImageFont.truetype("/System/Library/Fonts/Helvetica.ttc", size)
     except OSError: