fix: disable mention pings in log messages

Add allowedMentions: { parse: [] } to all three log message builders
(activityMessage, modLogMessage, memberMessage) to prevent automated
log entries from accidentally pinging users.

Closes #12

src/utils/components.ts

@@ -114,6 +114,7 @@ const modLogMessage = (
   source: "Command" | "Audit Log",
 ): Record<string, unknown> => {
   return {
+    allowedMentions: { parse: [] },
     components:      [
       buildContainer(
         "modAction",
@@ -139,6 +140,7 @@ const activityMessage = (
   fields: string,
 ): Record<string, unknown> => {
   return {
+    allowedMentions: { parse: [] },
     components:      [ buildContainer("info", `## ${emoji} ${title}`, fields) ],
     flags:           MessageFlags.IsComponentsV2,
   };
@@ -155,6 +157,7 @@ const memberMessage = (
   fields: string,
 ): Record<string, unknown> => {
   return {
+    allowedMentions: { parse: [] },
     components:      [
       buildContainer(
         type === "join"