curl: Update script to get curl 8.6.0

Utilities/Scripts/update-curl.bash

@@ -8,7 +8,7 @@ readonly name="curl"
 readonly ownership="Curl Upstream <curl-library@lists.haxx.se>"
 readonly subtree="Utilities/cmcurl"
 readonly repo="https://github.com/curl/curl.git"
-readonly tag="curl-8_5_0"
+readonly tag="curl-8_6_0"
 readonly shortlog=false
 readonly paths="
   CMake/*
@@ -35,15 +35,6 @@ extract_source () {
     git_archive
     pushd "${extractdir}/${name}-reduced"
     rm lib/config-*.h
-    chmod a-x lib/connect.c
-    for f in \
-      lib/cookie.c \
-      lib/krb5.c \
-      lib/security.c \
-      ; do
-        iconv -f LATIN1 -t UTF8 $f -o $f.utf-8
-        mv $f.utf-8 $f
-    done
     echo "* -whitespace" > .gitattributes
     popd
 }