fix: Add nixpacks configuration for Astro deployment

dealplustech-astro/node_modules/csso/cjs/replace/property/font-weight.cjs

@@ -0,0 +1,26 @@
+'use strict';
+
+function compressFontWeight(node) {
+    const value = node.children.head.data;
+
+    if (value.type === 'Identifier') {
+        switch (value.name) {
+            case 'normal':
+                node.children.head.data = {
+                    type: 'Number',
+                    loc: value.loc,
+                    value: '400'
+                };
+                break;
+            case 'bold':
+                node.children.head.data = {
+                    type: 'Number',
+                    loc: value.loc,
+                    value: '700'
+                };
+                break;
+        }
+    }
+}
+
+module.exports = compressFontWeight;