Update and rename NNNN-package-manager-dependency-mirroring.md to 0219-package-manager-dependency-mirroring.md

Author: neonichu

proposals/NNNN-package-manager-dependency-mirroring.md renamed to proposals/0219-package-manager-dependency-mirroring.md

@@ -1,9 +1,9 @@
 # Package Manager Dependency Mirroring
 
-* Proposal: [SE-NNNN](NNNN-package-manager-dependency-mirroring.md)
+* Proposal: [SE-0219](0219-package-manager-dependency-mirroring.md)
 * Authors: [Ankit Aggarwal](https://github.com/aciidb0mb3r)
 * Review Manager: [Boris Bügling](https://github.com/neonichu)
-* Status: **In Review**
+* Status: **Active review (07 10...07 17)**
 
 ## Introduction