libshumate: Update libshumate-1.5.2.tar.xz to 1.5.3 (#425)

Author: elementaryBot

io.elementary.tasks.json

@@ -144,8 +144,8 @@
             "sources": [
                 {
                     "type": "archive",
-                    "url": "https://download.gnome.org/sources/libshumate/1.5/libshumate-1.5.2.tar.xz",
-                    "sha256": "a69565c1eb5dd9ecd39268bbf1435eaa51a5b028ed0c652a0b6b9367e04c9386",
+                    "url": "https://download.gnome.org/sources/libshumate/1.5/libshumate-1.5.3.tar.xz",
+                    "sha256": "35f013b25391856e1b5c3d4409a5c4a640c6ccb5f5296ff982ec7bed39f56d4c",
                     "x-checker-data": {
                         "type": "gnome",
                         "name": "libshumate"