Merge smithy-rs-release-1.x.y into main (#4223)

Author: aws-sdk-rust-ci

.changelog/1752602322.md

@@ -1,4 +1,10 @@
 <!-- Do not manually edit this file. Use the `changelogger` tool. -->
+July 17th, 2025
+===============
+**New this release:**
+- (all, [smithy-rs#4212](https://github.com/smithy-lang/smithy-rs/issues/4212)) Event streams now allocate a right-sized buffer avoiding repeated reallocations during serialization
+
+
 July 16th, 2025
 ===============
 **New this release:**

CHANGELOG.md

@@ -5,34 +5,6 @@
 {
   "smithy-rs": [],
   "aws-sdk-rust": [
-    {
-      "message": "Fix default supported protocols incorrectly ordered in `ClientProtocolLoader`.\n",
-      "meta": {
-        "bug": true,
-        "breaking": false,
-        "tada": false
-      },
-      "author": "ysaito1001",
-      "references": [
-        "smithy-rs#4165"
-      ],
-      "since-commit": "c624a84d9ecc451854521e363e34cf6f1c10e009",
-      "age": 5
-    },
-    {
-      "message": "Add support for fetching account ID from IMDS credentials on EC2.\n",
-      "meta": {
-        "bug": false,
-        "breaking": false,
-        "tada": false
-      },
-      "author": "ysaito1001",
-      "references": [
-        "smithy-rs#4109"
-      ],
-      "since-commit": "c624a84d9ecc451854521e363e34cf6f1c10e009",
-      "age": 5
-    },
     {
       "message": "Temporarily disable fetching account ID from IMDS credentials on EC2.\n",
       "meta": {
@@ -45,7 +17,7 @@
         "smithy-rs#4187"
       ],
       "since-commit": "dd10f0602682dfabafc465dbcd9eb92d3d915c51",
-      "age": 4
+      "age": 5
     },
     {
       "message": "Fix hyper 1.x connection refused errors not marked as retryable\n",
@@ -57,7 +29,7 @@
       "author": "aajtodd",
       "references": [],
       "since-commit": "dd10f0602682dfabafc465dbcd9eb92d3d915c51",
-      "age": 4
+      "age": 5
     },
     {
       "message": "Make Rpc V2 CBOR a compatible protocol for `awsQuery` using `awsQueryCompatible` trait\n",
@@ -71,7 +43,7 @@
         "smithy-rs#4186"
       ],
       "since-commit": "dd10f0602682dfabafc465dbcd9eb92d3d915c51",
-      "age": 4
+      "age": 5
     },
     {
       "message": "Allows customers to configure the auth schemes and auth scheme resolver. For more information see the GitHub [discussion](https://github.com/smithy-lang/smithy-rs/discussions/4197).\n",
@@ -86,7 +58,7 @@
         "smithy-rs#4198"
       ],
       "since-commit": "ccf374dddc0690ef8aca1ed006b9e9b21299558e",
-      "age": 2
+      "age": 3
     },
     {
       "message": "re-use checksums on retry attempts for enhanced durability\n",
@@ -98,6 +70,20 @@
       "author": "aajtodd",
       "references": [],
       "since-commit": "1378695258e645d2c65a99cc0311b8c3d982e167",
+      "age": 2
+    },
+    {
+      "message": "Event streams now allocate a right-sized buffer avoiding repeated reallocations during serialization\n",
+      "meta": {
+        "bug": false,
+        "breaking": false,
+        "tada": false
+      },
+      "author": "rcoh",
+      "references": [
+        "smithy-rs#4212"
+      ],
+      "since-commit": "a23d116a79e8920c2efa813a8f831541a9943e4f",
       "age": 1
     }
   ],