wpewebkit: update to version 2.52.3

Update WPEWebKit to the 2.52 stable major release branch.

Includes a pending patchset to get WASM BBQJIT working on RISCV64,
upstream PR https://github.com/WebKit/WebKit/pull/65621

Alltogether this brings acceptable performance (even with LLVMPipe
Mesa software renderer) on RISCV64.

Link: https://wpewebkit.org/release/wpewebkit-2.52.0.html
Link: https://wpewebkit.org/release/wpewebkit-2.52.1.html
Link: https://wpewebkit.org/release/wpewebkit-2.52.2.html
Link: https://wpewebkit.org/release/wpewebkit-2.52.3.html
Signed-off-by: Daniel Golle <daniel@makrotopia.org>

libs/wpewebkit/patches/121-currentStackPointer-for-Linux-PPC-Linux-PPC64.patch

@@ -11,7 +11,7 @@ pointer on Linux running on PowerPC and PowerPC64 archtecture.
 
 --- a/Source/WTF/wtf/StackPointer.cpp
 +++ b/Source/WTF/wtf/StackPointer.cpp
-@@ -160,6 +160,17 @@ asm (
+@@ -157,6 +157,17 @@ __asm__(
       ".previous" "\n"
  );