Bump rav1e to 0.6 to fix compile error.

Author: fancycode

third-party/rav1e.cmd

@@ -13,7 +13,7 @@
 : # Also, the error that "The target windows-msvc is not supported yet" can safely be ignored provided that rav1e/target/release
 : # contains rav1e.h and rav1e.lib.
 
-git clone -b 0.5 --depth 1 https://github.com/xiph/rav1e.git
+git clone -b 0.6 --depth 1 https://github.com/xiph/rav1e.git
 
 cd rav1e
 cargo install cargo-c