docs: Update ChangeLog and README.md for 9.1.1

Author: Mintsuki

ChangeLog

@@ -1,3 +1,19 @@
+2025-03-10  mintsuki  <mintsuki@protonmail.com>
+
+    *** Release 9.1.1 ***
+
+    Noteworthy changes compared to the previous release, 9.1.0:
+
+    Bug fixes:
+        - Do not use ConOut for serial output exclusively unless serial is
+          verified to be present to the best of our abilities. This fixes an
+          issue where if `serial=yes` is used on some machines (including
+          several Apple Mac models) a black screen will be shown instead of the
+          Limine menu.
+
+    Miscellaneous:
+        - Begin signing tarballs and (most) commits.
+
 2025-03-07  mintsuki  <mintsuki@protonmail.com>
 
     *** Release 9.1.0 ***

README.md

@@ -76,9 +76,9 @@ For example, to clone the latest binary release of the `9.x` branch, one can do:
 ```bash
 git clone https://github.com/limine-bootloader/limine.git --branch=v9.x-binary --depth=1
 ```
-or, to clone a specific binary point release (for example `9.1.0`):
+or, to clone a specific binary point release (for example `9.1.1`):
 ```bash
-git clone https://github.com/limine-bootloader/limine.git --branch=v9.1.0-binary --depth=1
+git clone https://github.com/limine-bootloader/limine.git --branch=v9.1.1-binary --depth=1
 ```
 
 In order to rebuild host utilities like `limine`, simply run `make` in the binary