CI: upgrade vcpkg tag used for AppVeyor; use --triplet option

Author: mwtoews

.github/workflows/windows.yml

@@ -46,9 +46,7 @@ jobs:
         shell: cmd
         if: steps.cache.outputs.cache-hit != 'true'
         run: |
-            vcpkg install sqlite3[core,tool]:${{ env.ARCH }}-windows
-            vcpkg install tiff:${{ env.ARCH }}-windows
-            vcpkg install curl:${{ env.ARCH }}-windows
+            vcpkg install sqlite3[core,tool] tiff curl --triplet=${{ env.ARCH }}-windows
 
       - name: Build
         shell: cmd

appveyor.yml

@@ -31,10 +31,10 @@ build_script:
   # The checkout of a precise sha1 for VS2015 is a workaround for https://github.com/microsoft/vcpkg/issues/11666
   - if not exist %VCPKG_INSTALLED%\bin (
       cd "%VCPKG_ROOT%" &
-      git fetch --depth=1 origin 2022.04.12 &
+      git fetch --depth=1 origin 2023.04.15 &
       (if "%APPVEYOR_BUILD_WORKER_IMAGE%"=="Visual Studio 2015" (git -c advice.detachedHead=false checkout FETCH_HEAD)) &
       .\bootstrap-vcpkg.bat -disableMetrics &
-      vcpkg install curl sqlite3[core,tool] tiff &
+      vcpkg install sqlite3[core,tool] tiff curl --triplet=%platform%-windows &
       cd %APPVEYOR_BUILD_FOLDER%
     )
   - dir %VCPKG_INSTALLED%\bin

docs/source/install.rst

@@ -400,8 +400,8 @@ Install PROJ dependencies
 
 ::
 
-    vcpkg.exe install sqlite3[core,tool]:x86-windows tiff:x86-windows curl:x86-windows
-    vcpkg.exe install sqlite3[core,tool]:x64-windows tiff:x64-windows curl:x64-windows
+    vcpkg install sqlite3[core,tool] tiff curl --triplet=x86-windows
+    vcpkg install sqlite3[core,tool] tiff curl --triplet=x64-windows
 
 .. note:: The tiff and curl dependencies are only needed since PROJ 7.0