spreed-webrtc: revbump for go 1.21

srcpkgs/spreed-webrtc/template

@@ -1,10 +1,11 @@
 # Template file for 'spreed-webrtc'
 pkgname=spreed-webrtc
 version=0.29.7
-revision=10
+revision=11
 build_style=go
 go_import_path="github.com/strukturag/spreed-webrtc"
 go_package="${go_import_path}/src/app/spreed-webrtc-server"
+go_mod_mode=off
 hostmakedepends="automake nodejs git which"
 conf_files="/etc/spreed/webrtc.conf"
 short_desc="WebRTC audio/video call and conferencing server and web client"
@@ -17,6 +18,7 @@ checksum=d05b820fe3883840eadf8b96bda663397991849d9bda4750fc7c4e642c9c3268
 system_accounts="_spreed_webrtc"
 
 pre_build() {
+	export GOTOOLCHAIN="go1.26"
 	./autogen.sh
 	./configure ${configure_args}
 	make assets