chore: update changesets in prep for release

Add in issue references.

Author: kanej

.changeset/long-toes-deny.md

@@ -2,4 +2,4 @@
 "hardhat": patch
 ---
 
-Use default value for rpcCachePath when running solidity tests
+Speed up Solidity Tests when forking by setting an rpc cache path ([#6459](https://github.com/NomicFoundation/hardhat/issues/6459))

.changeset/polite-crabs-relax.md

@@ -3,4 +3,4 @@
 "hardhat": patch
 ---
 
-Added a mutex to synchronize compiler list downloads
+Fixed errors in compiler list downloads with a synchronization mutex ([#6437](https://github.com/NomicFoundation/hardhat/issues/6437))

.changeset/pre.json

@@ -31,16 +31,23 @@
     "@nomicfoundation/example-project": "3.0.1"
   },
   "changesets": [
+    "calm-clouds-work",
     "cool-waves-wonder",
     "early-wolves-move",
     "eighty-clouds-act",
+    "giant-chairs-drop",
+    "little-laws-shop",
+    "long-toes-deny",
     "many-wombats-grin",
     "neat-frogs-punch",
     "olive-lobsters-carry",
+    "polite-crabs-relax",
+    "release-3.0.0-next.2",
     "selfish-worms-remain",
     "short-beans-rest",
     "short-zoos-arrive",
     "slow-lobsters-watch",
+    "small-buckets-ring",
     "strong-mugs-change"
   ]
 }

.changeset/small-buckets-ring.md

@@ -1,5 +1,6 @@
 ---
 "@nomicfoundation/hardhat-typechain": patch
+"hardhat": patch
 ---
 
-Added support for the `attach` method in `hardhat-typechain`.
+Added support for the `attach` method in `hardhat-typechain` ([#6315](https://github.com/NomicFoundation/hardhat/issues/6315))