[async-mqtt] update async-mqtt port to 5.1.1 (#38617)

- [x] Changes comply with the [maintainer
guide](https://github.com/microsoft/vcpkg-docs/blob/main/vcpkg/contributing/maintainer-guide.md).
- [x] SHA512s are updated for each updated download.
- [x] The "supports" clause reflects platforms that may be fixed by this
new version.
- [x] Any fixed [CI
baseline](https://github.com/microsoft/vcpkg/blob/master/scripts/ci.baseline.txt)
entries are removed from that file.
- [x] Any patches that are no longer applied are deleted from the port's
directory.
- [x] The version database is fixed by rerunning `./vcpkg x-add-version
--all` and committing the result.
- [x] Only one version is added to each modified port's versions file.

ports/async-mqtt/portfile.cmake

@@ -4,7 +4,7 @@ vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO redboltz/async_mqtt
     REF "${VERSION}"
-    SHA512 3d0e062f5903cb9a5a5d14780603454fa292b5f3d18a58baef1825bafd2fc6bc89103a329362d4a86e40e1177ad36e9f7c4c1ab33be4b9f110681fcf150264e2
+    SHA512 11ec0b5c038a70ed80ff5584797310799617135debc8dcf6c778e5a0fc107bb5203aeb396dc2137067534ddc78089b6b28ec5469721d375ad17181253ff1f770
     HEAD_REF main
 )
 

ports/async-mqtt/vcpkg.json

@@ -1,6 +1,6 @@
 {
   "name": "async-mqtt",
-  "version": "5.1.0",
+  "version": "5.1.1",
   "description": "Header-only Asynchronous MQTT communication library for C++17 based on Boost.Asio.",
   "homepage": "https://github.com/redboltz/async_mqtt",
   "license": "BSL-1.0",

versions/a-/async-mqtt.json

@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "07727b962d881bbeb5b65b5677e1e9c67be96c02",
+      "version": "5.1.1",
+      "port-version": 0
+    },
     {
       "git-tree": "ed58076eabe5415b20f4b7cd91bb692c8ff7d979",
       "version": "5.1.0",

versions/baseline.json

@@ -281,7 +281,7 @@
       "port-version": 0
     },
     "async-mqtt": {
-      "baseline": "5.1.0",
+      "baseline": "5.1.1",
       "port-version": 0
     },
     "async-simple": {