[gnome-builder] build: rust-analyzer requires libsoup-2.4

[Christian Hergert <chergert src gnome org>]

commit 55965649b4fab83ad954b70d246e912c32c38b10
Author: Christian Hergert <chergert redhat com>
Date:   Mon Nov 23 14:34:37 2020 -0800

    build: rust-analyzer requires libsoup-2.4
    
    We should be explicit about that here since we may not have webkit
    enabled to build with.

 src/plugins/rust-analyzer/meson.build | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/src/plugins/rust-analyzer/meson.build b/src/plugins/rust-analyzer/meson.build
index 7eb0e2a2f..5a34141e4 100644
--- a/src/plugins/rust-analyzer/meson.build
+++ b/src/plugins/rust-analyzer/meson.build
@@ -1,5 +1,9 @@
 if get_option('plugin_rust_analyzer')
 
+plugins_deps += [
+  dependency('libsoup-2.4'),
+]
+
 plugins_sources += files([
   'rust-analyzer.c',
   'rust-analyzer-service.c',