mkosi: Ignore version from versioned dependencies in .SRCINFO

Dependencies in .SRCINFO can be versioned. Let's make sure we ignore
any specified versions when grepping it for dependencies. Also update
the arch submodule to the latest to make sure the change works.

mkosi.images/system/mkosi.conf.d/10-arch/mkosi.prepare

@@ -17,7 +17,7 @@ fi
 # We get depends and optdepends from .SRCINFO as getting them from the PKGBUILD is rather complex.
 sed --expression 's/^[ \t]*//' "pkg/$ID/.SRCINFO" |
     grep --regexp '^depends =' --regexp '^optdepends =' |
-    sed --expression 's/^depends = //' --expression 's/^optdepends = //' --expression 's/:.*//' |
+    sed --expression 's/^depends = //' --expression 's/^optdepends = //' --expression 's/:.*//' --expression 's/=.*//' |
     xargs --delimiter '\n' mkosi-install
 
 # We get makedepends from the PKGBUILD as .SRCINFO can't encode conditional dependencies depending on