I am uploading a NMU to DELAYED/10 in order to fix this.
The debdiff is attached.
diff -Nru debram-2.3.0/debian/changelog debram-2.3.0+nmu1/debian/changelog
--- debram-2.3.0/debian/changelog 2021-01-27 00:00:00.000000000 +0000
+++ debram-2.3.0+nmu1/debian/changelog 2023-10-13 16:49:31.000000000 +0000
@@ -1,3 +1,10 @@
+debram (2.3.0+nmu1) unstable; urgency=medium
+
+ * Non-maintainer upload.
+ * Convert to source format 3.0 (closes: #1007445).
+
+ -- Bastian Germann <b...@debian.org> Fri, 13 Oct 2023 16:49:31 +0000
+
debram (2.3.0) unstable; urgency=low
* Subramified 1440 Filesystems and Disks (User Commands).
diff -Nru debram-2.3.0/debian/source/format
debram-2.3.0+nmu1/debian/source/format
--- debram-2.3.0/debian/source/format 2015-05-10 19:13:19.000000000 +0000
+++ debram-2.3.0+nmu1/debian/source/format 2023-10-13 16:48:38.000000000
+0000
@@ -1 +1 @@
-1.0
+3.0 (native)
