package/sdl2: bump version to 2.30.11

For release notes since 2.30.9, see:
https://github.com/libsdl-org/SDL/releases/tag/release-2.30.10
https://github.com/libsdl-org/SDL/releases/tag/release-2.30.11

Update the license hash because of a change in copyright year:
- Copyright (C) 1997-2024 Sam Lantinga <slouken@libsdl.org>
+ Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>

Signed-off-by: Michael Fischer <mf@go-sys.de>
[Julien: add link to release notes]
Signed-off-by: Julien Olivain <ju.o@free.fr>

package/sdl2/sdl2.hash

@@ -1,4 +1,4 @@
-# Locally calculated after checking http://www.libsdl.org/release/SDL2-2.30.9.tar.gz.sig
-sha256  24b574f71c87a763f50704bbb630cbe38298d544a1f890f099a4696b1d6beba4  SDL2-2.30.9.tar.gz
+# Locally calculated after checking http://www.libsdl.org/release/SDL2-2.30.11.tar.gz.sig
+sha256  8b8d4aef2038533da814965220f88f77d60dfa0f32685f80ead65e501337da7f  SDL2-2.30.11.tar.gz
 # Locally calculated
-sha256  9b9e1764f06701bcf7ce21e942c682d5921ba0900c6fca760321b1c8837a9662  LICENSE.txt
+sha256  97f35b302b361680ec1e891e95d2d52097bb95abff361434916d99dc1305f127  LICENSE.txt

package/sdl2/sdl2.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-SDL2_VERSION = 2.30.9
+SDL2_VERSION = 2.30.11
 SDL2_SOURCE = SDL2-$(SDL2_VERSION).tar.gz
 SDL2_SITE = http://www.libsdl.org/release
 SDL2_LICENSE = Zlib