Fix build failure with Meson 0.52.

Taken from upstream:
https://gitlab.gnome.org/GNOME/dconf/commit/7ad890fb7a2ec90a777a756a1fa20a615ec7245e
https://gitlab.gnome.org/GNOME/dconf/merge_requests/54

diff --git a/client/meson.build b/client/meson.build
index f3b7122cb05bfa7bb481c487e3cd052aa1ad58e5..de6387e2cac2aba12b83f2614c277bada434fd16 100644
--- a/client/meson.build
+++ b/client/meson.build
@@ -28,7 +28,7 @@ libdconf_client = static_library(
 
 libdconf_client_dep = declare_dependency(
   dependencies: gio_dep,
-  link_whole: libdconf_client,
+  link_with: libdconf_client,
 )
 
 libdconf = shared_library(
nput type='hidden' name='id' value='519fe9d61f768cb5235921071f293d729413ebc5'/><select name='h' onchange='this.form.submit();'>
<option value='koszko' selected='selected'>koszko</option>
<option value='koszko-scripts'>koszko-scripts</option>
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<div class='path'>path: <a href='/guix/log/?id=519fe9d61f768cb5235921071f293d729413ebc5'>root</a>/<a href='/guix/log/gnu?id=519fe9d61f768cb5235921071f293d729413ebc5'>gnu</a>/<a href='/guix/log/gnu/packages?id=519fe9d61f768cb5235921071f293d729413ebc5'>packages</a>/<a href='/guix/log/gnu/packages/mercury.scm?id=519fe9d61f768cb5235921071f293d729413ebc5'>mercury.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/mercury.scm?id=519fe9d61f768cb5235921071f293d729413ebc5&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-07-23 12:13:59 -0500'>2020-07-23</span></td><td><a href='/guix/commit/gnu/packages/mercury.scm?id=7235ce224e3d20b5f73474cac2d3b34b50d754a5'>gnu: Add mercury.</a><span class='msg-avail'>...</span></td><td>Brett Gilio</td></tr>