ci: add -no-xattrs to unsquashfs cmdline

If the target dir is tmpfs and we run on old kernels we cannot extract
xattrs and the extracting will fail if there are any. hence add
-no-xattrs to the two remaining unsquashfs invocations that don't have
it.

(Also all other invocations across our test tree spell "-dest" instead
of "-d", hence do so here too.)

test/units/TEST-29-PORTABLE.directory.sh

@@ -17,8 +17,8 @@ if [[ -v ASAN_OPTIONS || -v UBSAN_OPTIONS ]]; then
     ARGS+=(--profile=trusted)
 fi
 
-unsquashfs -dest /tmp/minimal_0 /usr/share/minimal_0.raw
-unsquashfs -dest /tmp/minimal_1 /usr/share/minimal_1.raw
+unsquashfs -no-xattrs -d /tmp/minimal_0 /usr/share/minimal_0.raw
+unsquashfs -no-xattrs -d /tmp/minimal_1 /usr/share/minimal_1.raw
 
 portablectl "${ARGS[@]}" attach --copy=symlink --now --runtime /tmp/minimal_0 minimal-app0