zd-6117313: Allow Lancaster and Morecambe College

Add `lmc.ac.uk`, the domain of Lancaster and Morecambe College, to the email allow list and associated tests.

Author: kerrr

src/main/java/uk/gov/pay/adminusers/utils/email/EmailValidator.java

@@ -41,6 +41,7 @@ public class EmailValidator {
             "judiciary.uk",
             "improvementservice.org.uk",
             "llyw.cymru",
+            "lmc.ac.uk",
             "mil.uk",
             "mod.uk",
             "naturalengland.org.uk",

src/test/java/uk/gov/pay/adminusers/utils/email/EmailValidatorIsPublicSectorEmailTest.java

@@ -72,6 +72,7 @@ static Collection<Object[]> data() {
                 {"valid@improvementservice.org.uk", true},
                 {"valid@judiciary.uk", true},
                 {"valid@llyw.cymru", true},
+                {"valid@lmc.ac.uk", true},
                 {"valid@mil.uk", true},
                 {"valid@mod.uk", true},
                 {"valid@naturalengland.org.uk", true},
@@ -132,6 +133,7 @@ static Collection<Object[]> data() {
                 {"valid@subdomain.improvementservice.org.uk", true},
                 {"valid@subdomain.judiciary.uk", true},
                 {"valid@subdomain.llyw.cymru", true},
+                {"valid@subdomain.lmc.ac.uk", true},
                 {"valid@subdomain.mil.uk", true},
                 {"valid@subdomain.mod.uk", true},
                 {"valid@subdomain.naturalengland.org.uk", true},