gnu: openfoam-org: Fix build.

* gnu/packages/simulation.scm (openfoam-org)[inputs]: Replace vtk by
vtk-9.5, which fixes the build; and fmt-11 by fmt, which are the same.

Merges guix/guix!7052
Fixes: guix/guix#3783

Change-Id: Ifac2256ce0f3541fb79a4d89c9affeee22d73fe1
Signed-off-by: Cayetano Santos <csantosb@inventati.org>

gnu/packages/simulation.scm

@@ -119,7 +119,7 @@
                   expat
                   ffmpeg
                   findutils
-                  fmt-11
+                  fmt
                   freetype
                   gdal
                   gl2ps
@@ -161,7 +161,7 @@
                   readline
                   trilinos-zoltan
                   utfcpp
-                  vtk
+                  vtk-9.5
                   xz
                   zlib))
     (outputs '("debug" ;~60MB