Update the date for ready for swift 6 blog post (#753)

Author: shahmishal

_posts/2024-06-20-ready-for-swift-6.md renamed to _posts/2024-07-01-ready-for-swift-6.md

@@ -1,7 +1,7 @@
 ---
 layout: post
 published: true
-date: 2024-06-28 12:00:00
+date: 2024-07-01 09:00:00
 title: Plotting a Path to a Package Ecosystem without Data Race Errors
 author: [daveverwer, svenaschmidt]
 ---