book: update sl

Updated via the `update-book.yml` GitHub workflow.

Author: dscho

external/book/content/book/sl/v2/_index.html

@@ -8,9 +8,9 @@
   language_code: sl
   front_page: true
   repository_url: https://github.com/progit/progit2-sl
-  sha: b3915c73d89d835741daaaac2469f78fd8247214
-  ebook_pdf: https://github.com/progit/progit2-sl/releases/download/2.1.105/progit.pdf
-  ebook_epub: https://github.com/progit/progit2-sl/releases/download/2.1.105/progit.epub
+  sha: f63ba0809ceb9f2ac461287bed9c2070bc724e1d
+  ebook_pdf: https://github.com/progit/progit2-sl/releases/download/2.1.106/progit.pdf
+  ebook_epub: https://github.com/progit/progit2-sl/releases/download/2.1.106/progit.epub
 page_title: Git - Book
 url: "/book/sl/v2.html"
 aliases:

external/book/sync/book-sl.sha

@@ -1 +1 @@
-b3915c73d89d835741daaaac2469f78fd8247214
+f63ba0809ceb9f2ac461287bed9c2070bc724e1d