appveyor: bump VS2008 jobs to VS2010

VS2008 has been partly broken for a while with its shared-debug builds
crashing on startup. Its compiler output (UTF-16 HTML) was also barely
readable even after conversion. It's also the only platform in CI
missing `stdint.h`.

This patch migrates a VS2008 job to VS2010 and drops another that
already had a VS2010 equivalent.

We recommend switching to VS2010 or newer when using MSVC to build curl.

Ref: #15907
Closes #15934

appveyor.yml

@@ -43,24 +43,6 @@ environment:
 
     # generated CMake-based Visual Studio builds
 
-    - job_name: 'CMake, VS2008, Release, x86, Schannel, Shared, Build-tests'
-      APPVEYOR_BUILD_WORKER_IMAGE: 'Visual Studio 2015'
-      BUILD_SYSTEM: CMake
-      PRJ_GEN: 'Visual Studio 9 2008'
-      PRJ_CFG: Release
-      DEBUG: 'OFF'
-      SCHANNEL: 'ON'
-      ENABLE_UNICODE: 'OFF'
-      SHARED: 'ON'
-    - job_name: 'CMake, VS2008, Debug, x86, Schannel, Shared, Build-tests & examples'
-      APPVEYOR_BUILD_WORKER_IMAGE: 'Visual Studio 2015'
-      BUILD_SYSTEM: CMake
-      PRJ_GEN: 'Visual Studio 9 2008'
-      PRJ_CFG: Debug
-      SCHANNEL: 'ON'
-      ENABLE_UNICODE: 'OFF'
-      SHARED: 'ON'
-      EXAMPLES: 'ON'
     - job_name: 'CMake, VS2022, Release, x64, OpenSSL 3.3, Shared, Build-tests'
       APPVEYOR_BUILD_WORKER_IMAGE: 'Visual Studio 2022'
       BUILD_SYSTEM: CMake
@@ -81,6 +63,15 @@ environment:
       ENABLE_UNICODE: 'OFF'
       DEBUG: 'OFF'
       CURLDEBUG: 'ON'
+    - job_name: 'CMake, VS2010, Release, x64, Schannel, Static, Build-tests'
+      APPVEYOR_BUILD_WORKER_IMAGE: 'Visual Studio 2015'
+      BUILD_SYSTEM: CMake
+      PRJ_GEN: 'Visual Studio 10 2010'
+      TARGET: '-A x64'
+      PRJ_CFG: Release
+      SCHANNEL: 'ON'
+      ENABLE_UNICODE: 'OFF'
+      SHARED: 'ON'
     - job_name: 'CMake, VS2010, Debug, x64, Schannel, Static, Build-tests & examples'
       APPVEYOR_BUILD_WORKER_IMAGE: 'Visual Studio 2015'
       BUILD_SYSTEM: CMake
@@ -89,6 +80,7 @@ environment:
       PRJ_CFG: Debug
       SCHANNEL: 'ON'
       ENABLE_UNICODE: 'OFF'
+      SHARED: 'ON'
       EXAMPLES: 'ON'
     - job_name: 'CMake, VS2012, Debug, x64, OpenSSL 1.1.1, Build-tests'
       APPVEYOR_BUILD_WORKER_IMAGE: 'Visual Studio 2015'