package/wolfssl: security bump to v5.9.4

See the release note:

- https://github.com/wolfSSL/wolfssl/releases/tag/v5.9.4-stable

This fixes the following vulnerabilities:

- CVE-2026-15442: https://www.cve.org/CVERecord?id=CVE-2026-15442
- CVE-2026-89102: https://www.cve.org/CVERecord?id=CVE-2026-89102
- CVE-2026-89133: https://www.cve.org/CVERecord?id=CVE-2026-89133
- CVE-2026-89134: https://www.cve.org/CVERecord?id=CVE-2026-89134
- CVE-2026-89135: https://www.cve.org/CVERecord?id=CVE-2026-89135
- CVE-2026-89136: https://www.cve.org/CVERecord?id=CVE-2026-89136
- CVE-2026-93302: https://www.cve.org/CVERecord?id=CVE-2026-93302
- CVE-2026-93304: https://www.cve.org/CVERecord?id=CVE-2026-93304
- CVE-2026-94417: https://www.cve.org/CVERecord?id=CVE-2026-94417
- CVE-2026-94418: https://www.cve.org/CVERecord?id=CVE-2026-94418
- CVE-2026-94419: https://www.cve.org/CVERecord?id=CVE-2026-94419

This commit also updates the LICENSING hash, after an exception
was added in upstream commit:
94c657013d

Signed-off-by: Thomas Perale <thomas.perale@mind.be>
[Julien: fix LICENSING hash]
Signed-off-by: Julien Olivain <ju.o@free.fr>

package/wolfssl/wolfssl.hash

@@ -1,6 +1,6 @@
 # Locally computed:
-sha256  2f4ef3d4fd387a9b3191d36a6316d69116c46ff69bb9583b6c82b36d7b8ca114  wolfssl-5.9.2.tar.gz
+sha256  7256bfc89b183a75183806c7debfa203443873b0b4a562e1b80d68e01b45ac57  wolfssl-5.9.4.tar.gz
 
 # Hash for license files:
 sha256  8ceb4b9ee5adedde47b31e975c1d90c73ad27b6b165a1dcd80c7c545eb65b903  COPYING
-sha256  84f8096dc7f70cdb6075ccf3722a44654361063eaf3e1ce7885c9875b8465a63  LICENSING
+sha256  d4952a47f020a56e6ee267e0937b5ba0580b148bc5355216dffaf33d5671b960  LICENSING

package/wolfssl/wolfssl.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-WOLFSSL_VERSION = 5.9.2
+WOLFSSL_VERSION = 5.9.4
 WOLFSSL_SITE = $(call github,wolfSSL,wolfssl,v$(WOLFSSL_VERSION)-stable)
 WOLFSSL_INSTALL_STAGING = YES