Add v3.9.3 release history & post to `master` branch (#9284)

Merge pull request 9284

History.markdown

@@ -32,6 +32,19 @@
   * Optimize `Site#each_site_file` (#9187)
   * Rename sass partial created for new blank site (#9257)
 
+## 3.9.3 / 2023-01-29
+
+### Bug Fixes
+
+  * 3.9.x: Support i18n 1.x (#9269)
+  * Backport #8880 for v3.9.x: Support both tzinfo v1 and v2 along with
+    non-half hour offsets (#9280)
+
+### Development Fixes
+
+  * v3.9.x: test under Ruby 3.2 #9272)
+  * v3.9.x: fix rdiscount test (#9277)
+
 ## 4.3.2 / 2023-01-20
 
 ### Bug Fixes

docs/_docs/history.md

@@ -4,6 +4,23 @@ permalink: "/docs/history/"
 note: This file is autogenerated. Edit /History.markdown instead.
 ---
 
+## 3.9.3 / 2023-01-29
+{: #v3-9-3}
+
+### Bug Fixes
+{: #bug-fixes-v3-9-3}
+
+- 3.9.x: Support i18n 1.x ([#9269]({{ site.repository }}/issues/9269))
+- Backport [#8880]({{ site.repository }}/issues/8880) for v3.9.x: Support both tzinfo v1 and v2 along with
+    non-half hour offsets ([#9280]({{ site.repository }}/issues/9280))
+
+### Development Fixes
+{: #development-fixes-v3-9-3}
+
+- v3.9.x: test under Ruby 3.2 [#9272]({{ site.repository }}/issues/9272))
+- v3.9.x: fix rdiscount test ([#9277]({{ site.repository }}/issues/9277))
+
+
 ## 4.3.2 / 2023-01-20
 {: #v4-3-2}
 

docs/_posts/2023-01-29-jekyll-3-9-3-released.markdown

@@ -0,0 +1,15 @@
+---
+title: 'Jekyll 3.9.3 Released'
+date: 2023-01-29 18:30:22 2023 -0800
+author: parkr
+version: 3.9.3
+categories: [release]
+---
+
+Jekyll 3.9.3 is a bug fix release loosening version restrictions for
+dependencies `i18n` and `tzinfo` gems. You can now use Jekyll v3.9 with
+newer versions of these gems!
+
+More details in [the full release notes]({% link _docs/history.md %}#v3-9-3).
+
+Happy Jekylling!