gha: align ci-ipsec-e2e workflow name to main

Otherwise the name of the workflow displayed by GitHub bounces depending
on which one is executed last. This specific change seems to have been
lost while backporting e9e43fe ("ci: rename name fields").

Fixes: bdb02d4 ("ci: rename name fields")
Signed-off-by: Marco Iorio <marco.iorio@isovalent.com>

.github/workflows/conformance-ipsec-e2e.yaml

@@ -1,4 +1,4 @@
-name: Cilium Conformance IPsec E2E (ci-ipsec-e2e)
+name: Conformance IPsec E2E (ci-ipsec-e2e)
 
 # Any change in triggers needs to be reflected in the concurrency group.
 on: