Update gitignore.

.gitignore

@@ -68,6 +68,10 @@ tests/data/crypto/out*
 *.ox
 *.Plo
 *.so
+
+!modules/sandbox/tests/extensions/bin/libgodot-riscv.linux.debug.x86_64.so
+!modules/sandbox/tests/extensions/bin/libgodot-riscv.linux.release.x86_64.so
+
 # Binutils tmp linker output of the form "stXXXXXX" where "X" is alphanumeric
 st[A-Za-z0-9][A-Za-z0-9][A-Za-z0-9][A-Za-z0-9][A-Za-z0-9][A-Za-z0-9]
 
@@ -258,7 +262,9 @@ bld/
 [Bb]in/
 
 !modules/sandbox/bin/
+!modules/sandbox/bin/**/[Bb]in/
 !modules/sandbox/tests/extensions/bin/
+!modules/sandbox/tests/extensions/bin/**/[Bb]in/
 
 [Oo]bj/
 [Ll]og/