fix: Specify OSError in font loading exception handling

Author: Kingshuk-Microsoft

docs/generate_architecture_png.py

@@ -68,7 +68,7 @@ def draw_service_box(draw, x, y, w, h, title, subtitle="", icon_type="default",
     try:
         font_title = ImageFont.truetype("/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf", 13)
         font_sub = ImageFont.truetype("/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf", 10)
-    except Exception:
+    except OSError:
         font_title = ImageFont.load_default()
         font_sub = ImageFont.load_default()
 
@@ -208,7 +208,7 @@ def main():
     # Copyright
     try:
         font_copy = ImageFont.truetype("/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf", 10)
-    except Exception:
+    except OSError:
         font_copy = ImageFont.load_default()
 
     draw.text((50, HEIGHT-30), "© 2024 Microsoft Corporation All rights reserved.", fill=TEXT_GRAY, font=font_copy)