update git URLs (git -> https; gitea)

Change-Id: I22bc1dd5c8a33fbccc8cc6d0d8daf7f558f17f44
diff --git a/debian/control b/debian/control
index fdd4be8..ff11656 100644
--- a/debian/control
+++ b/debian/control
@@ -21,8 +21,8 @@
                libsystemd-dev,
                python3:native
 Standards-Version: 3.9.8
-Vcs-Git: git://git.osmocom.org/libosmocore.git
-Vcs-Browser: http://git.osmocom.org/libosmocore/
+Vcs-Git: https://gitea.osmocom.org/osmocom/libosmocore
+Vcs-Browser: https://gitea.osmocom.org/osmocom/libosmocore
 Homepage: https://projects.osmocom.org/projects/libosmocore
 
 Package: libosmocore