Update signatories

Author: marcprux

src/content/pages/banner.md

@@ -46,10 +46,9 @@ Link to a custom page, no close button:
 <script src="https://keepandroidopen.org/banner.js?link=https://example.com/android&hidebutton=off"></script>
 ```
 
-## Source
-
-The source for the banner can be found at [https://github.com/keepandroidopen/keepandroidopen.github.io/blob/main/public/banner.js](https://github.com/keepandroidopen/keepandroidopen.github.io/blob/main/public/banner.js). Suggestions for improvement are welcome!
-
 <div id="my-banner-custom"></div>
 <script src="/banner.js?link=https://example.com/android&hidebutton=off&size=mini&id=my-banner-custom"></script>
 
+## Source
+
+The source for the banner can be found at [https://github.com/keepandroidopen/keepandroidopen.github.io/blob/main/public/banner.js](https://github.com/keepandroidopen/keepandroidopen.github.io/blob/main/public/banner.js). Suggestions for improvement are welcome!

src/data/signatures.yaml

@@ -10,6 +10,9 @@
 - organization: "Aurora Store"
   url: "auroraoss.com"
   poc: "Vishal Bakhai <vishal@auroraoss.com>"
+- organization: "Center for Digital Progress"
+  url: "d-64.org"
+  poc: "Esther Bauer - D64 – Zentrum für Digitalen Fortschritt <buero@d-64.org>"
 - organization: "Chaos Computer Club"
   url: "ccc.de"
   poc: "Elina Eickstädt <presse@ccc.de>"
@@ -43,6 +46,12 @@
 - organization: "Guardian Project"
   url: "guardianproject.info"
   poc: "Nathan Freitas <nathan@guardianproject.info>"
+- organization: "Obtainium"
+  url: "obtainium.imranr.dev"
+  poc: "Imran <contact@imranr.dev>"
+- organization: "OpenStreetMap Foundation"
+  url: "osmfoundation.org"
+  poc: "Héctor Ochoa Ortiz <hector.ochoa.ortiz@osmfoundation.org>"
 - organization: "Osservatorio Nessuno OdV"
   url: "osservatorionessuno.org"
   poc: "Giulio B <giulio@osservatorionessuno.org>"