feat: add net10.0 support to MySql projects (except EFCore)

MySqlConnector targets netstandard2.0 so there is no dependency blocking
net10.0. Only MySql.EntityFrameworkCore remains on net8.0;net9.0 due to
Pomelo not yet supporting net10.0.

- Paramore.Brighter.MySql: BrighterTargetFrameworks (adds netstandard2.0 + net10.0)
- Inbox.MySql, Outbox.MySql, Locking.MySql: BrighterCoreTargetFrameworks (adds net10.0)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: holytshirt

src/Paramore.Brighter.Inbox.MySql/Paramore.Brighter.Inbox.MySql.csproj

@@ -2,7 +2,7 @@
   <PropertyGroup>
     <Description>MySQL inbox provider for Paramore.Brighter Command Processor. Enables inbox pattern implementation for idempotent command and event handling using MySQL as the persistence layer.</Description>
     <Authors>Derek Comartin</Authors>
-    <TargetFrameworks>$(BrighterNetNineEarlierTargetFrameworks)</TargetFrameworks>
+    <TargetFrameworks>$(BrighterCoreTargetFrameworks)</TargetFrameworks>
     <PackageTags>MySQL;Database;Inbox;Idempotent;Command;Event;Command Processor;Relational Database;Brighter</PackageTags>
     <Nullable>enable</Nullable>
   </PropertyGroup>

src/Paramore.Brighter.Locking.MySql/Paramore.Brighter.Locking.MySql.csproj

@@ -2,7 +2,7 @@
   <PropertyGroup>
     <Description>MySQL distributed locking provider for Paramore.Brighter Command Processor. Provides distributed lock implementation using MySQL for coordinating concurrent operations across multiple instances.</Description>
     <Authors>Rafael Andrade</Authors>
-    <TargetFrameworks>$(BrighterNetNineEarlierTargetFrameworks)</TargetFrameworks>
+    <TargetFrameworks>$(BrighterCoreTargetFrameworks)</TargetFrameworks>
     <PackageTags>MySQL;Distributed Locking;Concurrency;Lock;Command Processor;Database;SQL;Brighter</PackageTags>
     <Nullable>enable</Nullable>
   </PropertyGroup>

src/Paramore.Brighter.MySql/Paramore.Brighter.MySql.csproj

@@ -3,7 +3,7 @@
   <PropertyGroup>
     <Description>MySQL provider for Paramore.Brighter Command Processor. Provides common components for connecting to MySQL, including connection and transaction management for inbox, outbox, and messaging gateway implementations.</Description>
     <Authors>Ian Cooper</Authors>
-    <TargetFrameworks>$(BrighterNetNineEarlierTargetFrameworks)</TargetFrameworks>
+    <TargetFrameworks>$(BrighterTargetFrameworks)</TargetFrameworks>
     <PackageTags>MySQL;Database;Connection Provider;Transaction;Command;Event;Command Processor;Brighter</PackageTags>
     <Nullable>enable</Nullable>
   </PropertyGroup>

src/Paramore.Brighter.Outbox.MySql/Paramore.Brighter.Outbox.MySql.csproj

@@ -3,7 +3,7 @@
   <PropertyGroup>
     <Description>MySQL outbox implementation for Paramore.Brighter Command Processor. Provides reliable message publishing with outbox pattern using MySQL for transactional consistency and guaranteed delivery.</Description>
     <Authors>Derek Comartin</Authors>
-    <TargetFrameworks>$(BrighterNetNineEarlierTargetFrameworks)</TargetFrameworks>
+    <TargetFrameworks>$(BrighterCoreTargetFrameworks)</TargetFrameworks>
     <PackageTags>MySQL;Database;Outbox;Transactional;Command;Event;Service Activator;Decoupled;Invocation;Messaging;Remote;Command Dispatcher;Command Processor;Request;Service;Task Queue;Work Queue;Retry;Circuit Breaker;Availability;Brighter</PackageTags>
     <Nullable>enable</Nullable>
   </PropertyGroup>