OBS: support epoch in strongswan-epdg version

In the related commit, an epoch has been added to the strongswan-epdg
version. Adjust the code that replaces the version to suppor this.

Related: https://gitea.osmocom.org/ims-volte-vowifi/strongswan-epdg/commit/872be0a935a1ed5e4b926a7640da8bacac036e4a
Change-Id: I7abcf82a78fd4c4f6d29d2717dad5c70bc50e683
---
M scripts/obs/lib/debian.py
1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/scripts/obs/lib/debian.py b/scripts/obs/lib/debian.py
index 91c9dac..3c0c2a5 100644
--- a/scripts/obs/lib/debian.py
+++ b/scripts/obs/lib/debian.py
@@ -113,7 +113,7 @@
         pass
 
     # Debian versions must start with a digit
-    if version.startswith("osmo-epdg-"):
+    if "osmo-epdg-" in version:
         version = f"{version.replace('osmo-epdg-', '', 1)}-osmo-epdg"
 
     version = version.replace("-", ".")

