srt: upgrade 1.5.6 -> 1.5.7

Changelog:
https://github.com/Haivision/srt/releases/tag/v1.5.7

Signed-off-by: Ankur Tyagi <ankur.tyagi85@gmail.com>
Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>
(cherry picked from commit 426b417769)
Signed-off-by: Ankur Tyagi <ankur.tyagi85@gmail.com>
Signed-off-by: Anuj Mittal <anuj.mittal@oss.qualcomm.com>

meta-multimedia/recipes-support/srt/srt_1.5.7.bb

@@ -6,7 +6,7 @@ HOMEPAGE = "https://github.com/Haivision/srt"
 LICENSE = "MPL-2.0"
 LIC_FILES_CHKSUM = "file://LICENSE;md5=815ca599c9df247a0c7f619bab123dad"
 
-SRCREV = "c63c311e88aa55e430e3b7d94b89d790994f88c4"
+SRCREV = "d99d2e1a3b1a213b03c7dfbea5133898935fdeea"
 SRC_URI = "git://github.com/Haivision/srt;protocol=https;branch=master;tag=v${PV} \
            file://0001-don-t-install-srt-ffplay.patch \
            "