[gnome-build-meta] Revert "Update to WebKitGTK 2.27.2"

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 41a89e7323ad9ba1c79ec50d835fa6801179fba4
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Sat Oct 26 16:51:33 2019 +0000

    Revert "Update to WebKitGTK 2.27.2"
    
    This reverts commit b75fa688f1b3c9203a2841fdd35c88a87d8abd37

 elements/sdk/WebKitGTK.bst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/elements/sdk/WebKitGTK.bst b/elements/sdk/WebKitGTK.bst
index d66c0c80..a1795bba 100644
--- a/elements/sdk/WebKitGTK.bst
+++ b/elements/sdk/WebKitGTK.bst
@@ -1,7 +1,7 @@
 kind: cmake
 sources:
 - kind: tar
-  url: webkitgtk_org:webkitgtk-2.27.2.tar.xz
+  url: webkitgtk_org:webkitgtk-2.26.1.tar.xz
 - kind: patch
   path: files/webkitgtk/gtk-doc-introspection-cross-compiling.patch
 - kind: local