bash: changed build priority (106.500 -> 109.500) to be build after bison

When building bash, bison is used to generate a parser. This change assures
that we are using the bison which was build for the stage.

shells/bash/bash.desc

@@ -42,7 +42,7 @@
 [L] GPL
 [S] Stable
 [V] 4.2.37
-[P] X -1-3-----9 106.500
+[P] X -1-3-----9 109.500
 
 [D] 1638391797 bash-4.2.tar.gz ftp://ftp.gnu.org/pub/gnu/bash/
 [D] 14484477 bash42-001.patch !ftp://ftp.gnu.org/gnu/bash/bash-4.2-patches/bash42-001