[azure-core-cpp] Update to 1.7.1 (#26175)

## 1.7.1 (2022-08-04)

### Bugs Fixed

- [[#3794]](https://github.com/Azure/azure-sdk-for-cpp/issues/3794) Fix memory leak in `CurlTransport`.
- [[#3692]](https://github.com/Azure/azure-sdk-for-cpp/issues/3692) Interrupted poll calls cause spurious HTTP request failures. (A community contribution, courtesy of _[johnwheffner](https://github.com/johnwheffner)_)

### Acknowledgments

Thank you to our developer community members who helped to make Azure Core better with their contributions to this release:

- John Heffner _([GitHub](https://github.com/johnwheffner))_

ports/azure-core-cpp/portfile.cmake

@@ -1,8 +1,8 @@
 vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO Azure/azure-sdk-for-cpp
-    REF azure-core_1.7.0
-    SHA512 dca77d9b64b9ad3a91b63226f3650a531c024adb0a1d313356b78eb9c76d54f092c7c5d6e353058ad4b3c7ce7fd6d62ea95ab69a116e43f53025b379720f7cca
+    REF azure-core_1.7.1
+    SHA512 3aeaf10ee319db1afcac7b6aa33534e7f7517738af987588be2108ef2ffe8f5c3615239669a46b4b6967c9cf82b2bc0aa92d16af99be536c2395150ccca43866
 )
 
 vcpkg_check_features(

ports/azure-core-cpp/vcpkg.json

@@ -1,6 +1,6 @@
 {
   "name": "azure-core-cpp",
-  "version-semver": "1.7.0",
+  "version-semver": "1.7.1",
   "description": [
     "Microsoft Azure Core SDK for C++",
     "This library provides shared primitives, abstractions, and helpers for modern Azure SDK client libraries written in the C++."

versions/a-/azure-core-cpp.json

@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "e17b1885416ae07365e86acec91312d7318cc305",
+      "version-semver": "1.7.1",
+      "port-version": 0
+    },
     {
       "git-tree": "677fc287c3ba4d9a3582498071e1d14d5632e48f",
       "version-semver": "1.7.0",

versions/baseline.json

@@ -325,7 +325,7 @@
       "port-version": 3
     },
     "azure-core-cpp": {
-      "baseline": "1.7.0",
+      "baseline": "1.7.1",
       "port-version": 0
     },
     "azure-core-tracing-opentelemetry-cpp": {