Windows: update to libcurl 8.8.0

NEWS

@@ -4,6 +4,7 @@
  - The MacOS binary packages now require at least libcurl 7.80 which is included
    with all current MacOS versions (13+) as well as recent patch releases for
    legacy MacOS versions (11.7 and 12.7).
+ - Windows: update to libcurl 8.8.0
 
 5.2.3
  - Remove some CMD check verbosity per new CRAN rules

tools/winlibs.R

@@ -1,11 +1,11 @@
 if(!file.exists("../windows/libcurl/include/curl/curl.h")){
   unlink("../windows", recursive = TRUE)
   url <- if(grepl("aarch", R.version$platform)){
-    "https://github.com/r-windows/bundles/releases/download/curl-8.3.0/curl-8.3.0-clang-aarch64.tar.xz"
+    "https://github.com/r-windows/bundles/releases/download/curl-8.8.0/curl-8.8.0-clang-aarch64.tar.xz"
   } else if(grepl("clang", Sys.getenv('R_COMPILED_BY'))){
-    "https://github.com/r-windows/bundles/releases/download/curl-8.3.0/curl-8.3.0-clang-x86_64.tar.xz"
+    "https://github.com/r-windows/bundles/releases/download/curl-8.8.0/curl-8.8.0-clang-x86_64.tar.xz"
   } else if(getRversion() >= "4.2") {
-    "https://github.com/r-windows/bundles/releases/download/curl-8.3.0/curl-8.3.0-ucrt-x86_64.tar.xz"
+    "https://github.com/r-windows/bundles/releases/download/curl-8.8.0/curl-8.8.0-ucrt-x86_64.tar.xz"
   } else {
     "https://github.com/rwinlib/libcurl/archive/v7.84.0.tar.gz"
   }