Do not require libraw on aaarch64

Disable the build and subsequently runtime requirement for libraw
on aarch64 as it is not availabe.

The package did previously build but this looks to be an error.

From IRC

```
14:58:24 SSmoogen | so the aarch64 must have been built against an older
   LibRaw which was in the channels at
                  | one point:
./RHEL-8-001/non_modular/LibRaw-0.19.5-1.el8.aarch64.rpm
                  |
./RHEL-8-001/non_modular/LibRaw-devel-0.19.5-1.el8.aarch64.rpm
14:59:30 SSmoogen | frisbee, the older one was in CodeReadyBuilder for
   aarch64
14:59:48 SSmoogen | yay channel headache
15:01:08 SSmoogen | tdawson, carlwgeorge, jwboyer ^^ not sure how this
   happened and what EPEL will need to do
                  | to 'fix'
15:01:15  frisbee | Don't understand why no EPEL8 update is here
                  |
https://bodhi.fedoraproject.org/updates/?search=ImageMagick it's clearly
new in testing.
15:03:26  tdawson | libRaw-devel was not released on all arches.  Only
   x86_64 and ppc64le.  There is a
                  | libRaw-epel.
15:04:06  tdawson | But it's really hard to rebuild it before 8.6 is
   released.  So ... patience ... it's just
                  | been a matter of hours since 8.6 made it into epel8.
15:05:06  tdawson | Or ... wait, I think I'm thinking of epel9 ... it's
   early, let me double check.
15:06:18  tdawson | SSmoogen: Is the 8.6 sync done in epel8 ?
15:07:02 SSmoogen | I believe it is done. I was confused because I was
   looking at a different 'libraw'
15:08:08 SSmoogen | looks like it finished at 3:30 am
15:09:32  tdawson | OK, I'll take a look at libRaw and ImageMagick

```

ImageMagick.spec

@@ -10,7 +10,7 @@ Epoch:          1
 Epoch:          0
 %endif
 Version:        6.9.12.48
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        An X application for displaying and manipulating images
 
 %global VER %(foo=%{version}; echo ${foo:0:6})
@@ -41,8 +41,8 @@ BuildRequires:  jbigkit-devel
 BuildRequires:  pkgconfig(libopenjp2) >= 2.1.0
 BuildRequires:  pkgconfig(libcgraph) >= 2.9.0
 BuildRequires:  pkgconfig(raqm)
-%ifnarch s390x
-# not in EPEL s390x
+%ifnarch s390x aarch64
+# not in EPEL s390x or aarch64
 BuildRequires:  pkgconfig(libraw) >= 0.14.8
 %endif
 BuildRequires:  autoconf automake gcc gcc-c++
@@ -323,6 +323,9 @@ rm PerlMagick/demo/Generic.ttf
 %doc PerlMagick/demo/ PerlMagick/Changelog PerlMagick/README.txt
 
 %changelog
+* Wed May 11 2022 Steve Traylen <steve.traylen@crn.ch> - 1:6.9.12.48-2
+- libraw not available for aarch64 (was for a time by accident)
+
 * Sun May 08 2022 Sérgio Basto <sergio@serjux.com> - 1:6.9.12.48-1
 - Update ImageMagick to 6.9.12.48
 - Change the way of calculte VER and Patchlevel which will fix the-new-hotness/release-monitoring.org's scratch build