[sdl2-image] Update to 2.8.2 (#36830)

Fixes https://github.com/microsoft/vcpkg/issues/36769
Removed `fix-pkgconfig.patch`.

- [X] Changes comply with the [maintainer
guide](https://github.com/microsoft/vcpkg-docs/blob/main/vcpkg/contributing/maintainer-guide.md).
- [X] SHA512s are updated for each updated download.
- [ ] ~~The "supports" clause reflects platforms that may be fixed by
this new version.~~
- [ ] ~~Any fixed [CI
baseline](https://github.com/microsoft/vcpkg/blob/master/scripts/ci.baseline.txt)
entries are removed from that file.~~
- [X] Any patches that are no longer applied are deleted from the port's
directory.
- [X] The version database is fixed by rerunning `./vcpkg x-add-version
--all` and committing the result.
- [X] Only one version is added to each modified port's versions file.

All features passed with following triplets:

```
x86-windows
x64-windows
x64-windows-static
```
Usage test pass with following triplets:

```
x86-windows
x64-windows
x64-windows-static
```

ports/sdl2-image/fix-findwebp.patch

@@ -1,9 +1,9 @@
 diff --git a/CMakeLists.txt b/CMakeLists.txt
-index 438a0aa..5f019fa 100644
+index 65a8811..1f29faa 100644
 --- a/CMakeLists.txt
 +++ b/CMakeLists.txt
-@@ -607,7 +607,7 @@ if(SDL2IMAGE_WEBP)
-         list(APPEND INSTALL_EXTRA_TARGETS webp)
+@@ -690,7 +690,7 @@ if(SDL2IMAGE_WEBP)
+         add_library(SDL2_image::external_libwebp ALIAS webp)
      else()
          message(STATUS "${PROJECT_NAME}: Using system libwebp")
 -        find_package(webp REQUIRED)
@@ -12,10 +12,10 @@ index 438a0aa..5f019fa 100644
      endif()
      if(SDL2IMAGE_WEBP_SHARED)
 diff --git a/SDL2_imageConfig.cmake.in b/SDL2_imageConfig.cmake.in
-index ae38719..f1cc020 100644
+index c59e844..7b16a60 100644
 --- a/SDL2_imageConfig.cmake.in
 +++ b/SDL2_imageConfig.cmake.in
-@@ -67,7 +67,7 @@ endif()
+@@ -74,7 +74,7 @@ endif()
  
  if(SDL2IMAGE_WEBP AND NOT SDL2IMAGE_VENDORED AND NOT TARGET WebP::webp)
      list(APPEND webp_ROOT "${CMAKE_CURRENT_LIST_DIR}")

ports/sdl2-image/fix-pkgconfig.patch

@@ -1,22 +0,0 @@
-diff --git a/CMakeLists.txt b/CMakeLists.txt
-index 9abeefb..ba42875 100644
---- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -694,7 +694,7 @@ if(SDL2IMAGE_INSTALL)
-         COMPONENT devel
-     )
- 
--    if(SDL2IMAGE_BUILD_SHARED_LIBS)
-+    if(1)
-         # Only create a .pc file for a shared SDL2_image
-         set(prefix "${CMAKE_INSTALL_PREFIX}")
-         set(exec_prefix "\${prefix}")
-@@ -723,7 +723,7 @@ if(SDL2IMAGE_INSTALL)
-                 \"${CMAKE_CURRENT_BINARY_DIR}/SDL2_image.pc\")
-             file(INSTALL DESTINATION \"\${CMAKE_INSTALL_PREFIX}/${PC_DESTDIR}\"
-                 TYPE FILE
--                FILES \"${CMAKE_CURRENT_BINARY_DIR}/SDL2_image.pc\")" CONFIG Release COMPONENT devel)
-+                FILES \"${CMAKE_CURRENT_BINARY_DIR}/SDL2_image.pc\")" COMPONENT devel)
-     endif()
- 
-     if(SDL2IMAGE_BUILD_SHARED_LIBS AND (APPLE OR (UNIX AND NOT ANDROID)))

ports/sdl2-image/portfile.cmake

@@ -2,9 +2,10 @@ vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO libsdl-org/SDL_image
     REF "release-${VERSION}"
-    SHA512 ffd0f838525e17a43d03ea5d4a094b0c79b2627bdbfb4589645abfb606c594773d60184de31bda45999421da75a69f1987ed696b255991212e498161102972b1
+    SHA512 1ec6e7d08bbcd28bba6c972b2e4a11a1da841abef3ffb3d29669b0f5eb0839f39044b0b334c0707274dd51192e081f25bdab97c6710d632422c4ed0274a30f18
     HEAD_REF main
-    PATCHES fix-pkgconfig.patch fix-findwebp.patch
+    PATCHES 
+        fix-findwebp.patch
 )
 
 vcpkg_check_features(

ports/sdl2-image/vcpkg.json

@@ -1,7 +1,6 @@
 {
   "name": "sdl2-image",
-  "version": "2.6.3",
-  "port-version": 1,
+  "version": "2.8.2",
   "description": "SDL_image is an image file loading library. It loads images as SDL surfaces and textures, and supports the following formats: BMP, GIF, JPEG, LBM, PCX, PNG, PNM, TGA, TIFF, WEBP, XCF, XPM, XV",
   "homepage": "https://github.com/libsdl-org/SDL_image",
   "license": "Zlib",

versions/baseline.json

@@ -7845,8 +7845,8 @@
       "port-version": 11
     },
     "sdl2-image": {
-      "baseline": "2.6.3",
-      "port-version": 1
+      "baseline": "2.8.2",
+      "port-version": 0
     },
     "sdl2-mixer": {
       "baseline": "2.8.0",

versions/s-/sdl2-image.json

@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "849a6f697c249f583d942ce2ce08ba3e4a9c195c",
+      "version": "2.8.2",
+      "port-version": 0
+    },
     {
       "git-tree": "641c3eeecdd7f109ac777e1a2792dd2b755f07fc",
       "version": "2.6.3",