Add blog for week 13 (#1019)

Add blog for week 13

Reviewed-by: Laura Barcziová
Reviewed-by: Nikola Forró
Reviewed-by: Matej Focko

Author: softwarefactory-project-zuul[bot]

weekly/2025/week-13.md

@@ -0,0 +1,21 @@
+---
+title: Week 13 in Packit
+date: 2025-03-31
+authors: nforro
+tags:
+  - 2025-March
+  - 2025
+  - March
+---
+
+## Week 13 (March 25th – March 31st)
+
+- We have fixed an issue that could cause subsequent runs
+  of `propose_downstream`/`pull_from_upstream` to fail if upstream git repo
+  contains submodules that are manipulated with in actions.
+  ([packit-service#2768](https://github.com/packit/packit-service/pull/2768))
+- Packit now supports `--base-nvr` option when submitting scans to OpenScanHub.
+  The base NVR is pulled in from Koji to perform a differential scan.
+  ([packit#2569](https://github.com/packit/packit/pull/2569))
+- Packit CLI now submits Koji builds in parallel.
+  ([packit#2568](https://github.com/packit/packit/pull/2568))