fix: sort espidf semver file sensitive to case

libc-test/semver/espidf.txt

@@ -1,16 +1,10 @@
 AF_INET6
 AF_UNIX
-cmsghdr
-dirent
-eventfd
 FIONBIO
-gethostname
-getrandom
 MSG_CTRUNC
 MSG_DONTROUTE
 MSG_DONTWAIT
 MSG_EOR
-msghdr
 MSG_MORE
 MSG_NOSIGNAL
 MSG_OOB
@@ -27,23 +21,29 @@ POLLRDBAND
 POLLRDNORM
 POLLWRBAND
 POLLWRNORM
-pthread_create
 PTHREAD_STACK_MIN
-recvmsg
-sendmsg
 SIGABRT
 SIGFPE
 SIGHUP
 SIGILL
 SIGINT
 SIGQUIT
 SIGSEGV
-sigset_t
 SIGTERM
+SOL_SOCKET
+cmsghdr
+dirent
+eventfd
+gethostname
+getrandom
+msghdr
+pthread_create
+recvmsg
+sendmsg
+sigset_t
 sockaddr
 sockaddr_in
 sockaddr_in6
 sockaddr_storage
 sockaddr_un
-SOL_SOCKET
 stat