Here's a debdiff for re-adding the default-jdk build dependency.
diff -Nru gdcm-3.0.24/debian/changelog gdcm-3.0.24/debian/changelog
--- gdcm-3.0.24/debian/changelog 2024-09-14 14:36:50.000000000 +0200
+++ gdcm-3.0.24/debian/changelog 2025-01-21 15:28:46.000000000 +0100
@@ -1,3 +1,9 @@
+gdcm (3.0.24-6) unstable; urgency=medium
+
+ * Build depends on default-jdk, not default-jdk-headless (Closes: #1093693).
+
+ -- Alessandro Astone <alessandro.ast...@canonical.com> Tue, 21 Jan 2025
15:28:46 +0100
+
gdcm (3.0.24-5) unstable; urgency=medium
* Team upload.
diff -Nru gdcm-3.0.24/debian/control gdcm-3.0.24/debian/control
--- gdcm-3.0.24/debian/control 2024-09-14 14:36:50.000000000 +0200
+++ gdcm-3.0.24/debian/control 2025-01-21 15:28:41.000000000 +0100
@@ -8,7 +8,7 @@
Build-Depends: castxml,
cmake,
debhelper-compat (= 13),
- default-jdk-headless [!hppa !hurd-any !kfreebsd-any],
+ default-jdk [!hppa !hurd-any !kfreebsd-any],
dh-sequence-python3,
dh-strip-nondeterminism,
docbook-xsl-ns,
