build: pin palette.json tag

refs: catppuccin/palette#49

build.py

@@ -5,16 +5,16 @@
 import urllib.request
 
 def main():
-  with urllib.request.urlopen('https://github.com/raw/catppuccin/palette/main/palette.json') as f:
+  with urllib.request.urlopen('https://github.com/raw/catppuccin/palette/v0.2.0/palette.json') as f:
     data = f.read().decode('utf-8')
     colors = json.loads(data)
-  
+
   for theme in ["latte", "frappe", "macchiato", "mocha"]:
     # create mapping
     colormap = {}
     for color in colors["macchiato"]:
       colormap[colors["macchiato"][color]["hex"]] = colors[theme][color]["hex"]
-    
+
     # delete old files
     for file in os.listdir(f"themes/catppuccin-{theme}"):
       if file.endswith(".png"):
@@ -29,12 +29,12 @@ def main():
         svg = svg.replace(color, colormap[color])
       with open("tmp.svg", "w") as tmp:
         tmp.write(svg)
-      
+
       if file == "preview.svg":
         os.system(f'convert -background none "tmp.svg" "assets/{theme}.png"')
       else:
         os.system(f'convert -background none "tmp.svg" "themes/catppuccin-{theme}/{file.removesuffix(".svg")}.png"')
-  
+
   # cleanup
   os.remove("tmp.svg")
 
@@ -46,4 +46,4 @@ def main():
   os.system("python3 -m catwalk -o assets/mocha.png assets/mocha.png assets/mocha.png assets/mocha.png assets/mocha.png")
 
 if __name__ == "__main__":
-  main()
+  main()