Add changeset

Author: psd-coder

.changeset/sharp-pets-win.md

@@ -0,0 +1,12 @@
+---
+'astro': patch
+---
+
+Extend allowed SCP directives list with missing ones from SCP Spec Level 3:
+
+- `script-src`
+- `script-src-elem`
+- `script-src-attr`
+- `style-src`
+- `style-src-elem`
+- `style-src-attr`