update extlib version (closes #7796) (#8028)

* update extlib version (closes #7796)

* check that it works

opam

@@ -18,7 +18,7 @@ depends: [
   "sedlex"              {build & <= "1.99.4"} #https://github.com/HaxeFoundation/haxe/issues/7958
   "ppx_tools_versioned" {build & != "5.2.1"} #https://github.com/alainfrisch/sedlex/issues/64
   "xml-light"           {build}
-  "extlib"              {build & >= "1.7"}
+  "extlib"              {build & >= "1.7.6"}
   "ptmap"               {build}
   "sha"                 {build}
   "conf-libpcre"

tests/misc/projects/Issue7796/Main.hx

@@ -0,0 +1,4 @@
+class Main {
+	static function main() {
+	}
+}

tests/misc/projects/Issue7796/compile.hxml

@@ -0,0 +1,4 @@
+-main Main
+-swf-lib glsl2agal.swc
+-swf main.swf
+--no-output