Add reproducible builds

Fix type mismatch in retainAll() calls that cause updateGroup --admin
and --remove-member to silently do nothing.

retainAll() compared Set<RecipientId> against Collection<GroupMemberInfo>,
which always evaluates to false (different types), emptying the set.

Replace group.getMembers() with group.getMemberRecipientIds() in all
three affected locations.

Fixes: updateGroup --admin silently failing to promote members
Fixes: updateGroup --remove-member silently failing to remove members

Co-authored-by: joey <joey@Mac-Studio.local>

lib/src/main/java/org/asamk/signal/manager/helper/GroupHelper.java

@@ -739,7 +739,7 @@ public class GroupHelper {
             if (banMembers != null) {
                 existingRemoveMembers.addAll(banMembers);
             }
-            existingRemoveMembers.retainAll(group.getMembers());
+            existingRemoveMembers.retainAll(group.getMemberRecipientIds());
             if (members != null) {
                 existingRemoveMembers.removeAll(members);
             }
@@ -765,7 +765,7 @@ public class GroupHelper {
 
         if (admins != null) {
             final var newAdmins = new HashSet<>(admins);
-            newAdmins.retainAll(group.getMembers());
+            newAdmins.retainAll(group.getMemberRecipientIds());
             newAdmins.removeAll(group.getAdminMemberRecipientIds());
             if (!newAdmins.isEmpty()) {
                 for (var admin : newAdmins) {
@@ -878,7 +878,7 @@ public class GroupHelper {
     ) throws LastGroupAdminException, IOException {
         final var currentAdmins = groupInfoV2.getAdminMemberRecipientIds();
         newAdmins.removeAll(currentAdmins);
-        newAdmins.retainAll(groupInfoV2.getMembers());
+        newAdmins.retainAll(groupInfoV2.getMemberRecipientIds());
         if (currentAdmins.contains(account.getSelfRecipientId())
                 && currentAdmins.size() == 1
                 && groupInfoV2.getMembers().size() > 1