Manual: document support for Octave 6.4.0

(manually cherry picked from commit ddbc2cdd)

doc/manual/source/installation-and-configuration.rst

@@ -15,7 +15,7 @@ necessary in that case.
 In order to run Dynare, you need one of the following:
 
 * MATLAB, any version ranging from 8.3 (R2014a) to 9.11 (R2021b);
-* GNU Octave, any version ranging from 5.2.0 to 6.3.0, with the statistics
+* GNU Octave, any version ranging from 5.2.0 to 6.4.0, with the statistics
   package from `Octave-Forge`_. Note however that the Dynare installer for
   Windows requires a more specific version of Octave, as indicated on the
   download page.