Bump AppVeyor Visual Studio version to 2022

Change Visual Studio version in README.md
diff --git a/README.md b/README.md
index 553ae9f..51f47b1 100644
--- a/README.md
+++ b/README.md
@@ -60,7 +60,7 @@
 
 ## Prebuilt Library (Windows)
 
-If you're building on Windows with Visual Studio 2019 and want to try out
+If you're building on Windows with Visual Studio 2022 and want to try out
 libavif without going through the build process, static library builds for both
 Debug and Release are available on
 [AppVeyor](https://ci.appveyor.com/project/louquillio/libavif).
diff --git a/appveyor.yml b/appveyor.yml
index da51560..de4da36 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,4 +1,4 @@
-image: Visual Studio 2019
+image: Visual Studio 2022
 configuration: Release
 skip_commits:
   files:
@@ -10,8 +10,8 @@
 install:
  # Get submodules
  - git submodule update --init --recursive
- # Prepare VS env
- - call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvars64.bat"
+ # Prepare Visual Studio environment
+ - call "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvars64.bat"
  # Install Nasm
  - appveyor DownloadFile "https://github.com/joedrago/nasm_mirror/raw/master/nasm-2.15.05-win64.zip" -FileName "nasm.zip"
  - 7z x "nasm.zip" > nul
@@ -41,14 +41,14 @@
  - copy %CONFIGURATION%\avifenc.exe .
  - copy %CONFIGURATION%\avifdec.exe .
  - mkdir lib
- - set ARTIFACT_ZIP=libavif_vs2019_x64_%APPVEYOR_REPO_COMMIT:~0,8%_%CONFIGURATION%.zip
+ - set ARTIFACT_ZIP=libavif_vs2022_x64_%APPVEYOR_REPO_COMMIT:~0,8%_%CONFIGURATION%.zip
  - copy %CONFIGURATION%\avif.lib lib\avif_x64_%CONFIGURATION%.lib
  - 7z a %ARTIFACT_ZIP% lib
  - cd ..
  - 7z a build\%ARTIFACT_ZIP% include examples
 
 artifacts:
-- path: 'build\libavif_vs2019_x64_*.zip'
+- path: 'build\libavif_vs2022_x64_*.zip'
   name: Static Lib and Includes
 - path: 'build\*.exe'
   name: Basic apps