[gnome-build-meta/abderrahim/3.38.3] revert build failures

[Abderrahim Kitouni <akitouni src gnome org>]

commit 69aea9688ed2d2a883e19f2cc3aab000fbcf845c
Author: Abderrahim Kitouni <akitouni gnome org>
Date:   Tue Jan 12 13:53:57 2021 +0100

    revert build failures

 elements/core-deps/gegl.bst    | 4 ++--
 elements/core-deps/gtkmm-3.bst | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/elements/core-deps/gegl.bst b/elements/core-deps/gegl.bst
index 07580c44..8d5a207a 100644
--- a/elements/core-deps/gegl.bst
+++ b/elements/core-deps/gegl.bst
@@ -2,8 +2,8 @@ kind: meson
 
 sources:
 - kind: tar
-  url: https://download.gimp.org/pub/gegl/0.4/gegl-0.4.28.tar.xz
-  ref: 1d110d8577d54cca3b34239315bd37c57ccb27dd4355655074a2d2b3fd897900
+  url: https://download.gimp.org/pub/gegl/0.4/gegl-0.4.26.tar.xz
+  ref: 0f371e2ed2b92162fefd3dde743e648ca08a6a1b2b05004867fbddc7e211e424
 build-depends:
 - sdk/vala.bst
 - freedesktop-sdk.bst:public-stacks/buildsystem-meson.bst
diff --git a/elements/core-deps/gtkmm-3.bst b/elements/core-deps/gtkmm-3.bst
index e04eb768..89d34adc 100644
--- a/elements/core-deps/gtkmm-3.bst
+++ b/elements/core-deps/gtkmm-3.bst
@@ -1,8 +1,8 @@
 kind: autotools
 sources:
 - kind: tar
-  url: gnome_downloads:gtkmm/3.24/gtkmm-3.24.3.tar.xz
-  ref: 60497c4f7f354c3bd2557485f0254f8b7b4cf4bebc9fee0be26a77744eacd435
+  url: gnome_downloads:gtkmm/3.24/gtkmm-3.24.2.tar.xz
+  ref: 6d71091bcd1863133460d4188d04102810e9123de19706fb656b7bb915b4adc3
 build-depends:
 - freedesktop-sdk.bst:components/perl-xml-parser.bst
 - freedesktop-sdk.bst:public-stacks/buildsystem-autotools.bst