Update buildroot

Update buildroot (branch cesnet/2023-06-12). This also contains a patch
to fix libcurl build[1] which I had on my local dev machine.

New buildroot also builds systemd 252.4 so necessary patch update added.

Also added perl-English package to our CI machines to silence the
following build error:

  2023-06-12 12:42:55.964693 | w | Your Perl installation is not complete enough; at least the following
  2023-06-12 12:42:55.964825 | w | modules are missing:
  2023-06-12 12:42:55.964844 | w |
  2023-06-12 12:42:55.964856 | w | 	 English
  2023-06-12 12:42:55.964866 | w |

Systemd 252 added naming scheme for net links with devicetree
aliases[2]. This renames our eth{0,1} to end{1,2} which is undesirable
because the boxes physical ports are labelled eth{0,1,2}. Oh and I forgot:
The network does not start after the boot because we expect the names
to be eth{0,1}. So let's make sure our names stay eth{0,1,2}.

[1] https://bugs.buildroot.org/show_bug.cgi?id=15181
[2] https://www.freedesktop.org/software/systemd/man/systemd.net-naming-scheme.html

Change-Id: I6a59388216fde516b58b080f8aafdfb5136981d2
diff --git a/ci/pre.yaml b/ci/pre.yaml
new file mode 100644
index 0000000..344c91e
--- /dev/null
+++ b/ci/pre.yaml
@@ -0,0 +1,7 @@
+- hosts: all
+  tasks:
+    - name: install perl-English
+      package:
+        name: perl-English
+        state: present
+      become: true