autobot: Update mynewt-nimble

Update mynewt-nimble to 7d4762b4e24041f49756d0a81adfed21beafd2ed.

Signed-off-by: autobot <autobot-noreply@arm.com>

LICENSE.md

@@ -95,7 +95,7 @@ Folders containing external components are listed below. Each component should c
             "License": "Apache-2.0",
             "Origin": "https://github.com/apache/mynewt-nimble",
             "Category": "2",
-            "Version": "512ed55ecd4a694644b83ac9971487f8131348e9",
+            "Version": "7d4762b4e24041f49756d0a81adfed21beafd2ed",
             "Security risk": "low"
         },
         {

cmake/DeclareSdkComponents.cmake

@@ -157,7 +157,7 @@ FetchContent_Declare(
 FetchContent_Declare(
     mynewt-nimble
     GIT_REPOSITORY  https://github.com/apache/mynewt-nimble.git
-    GIT_TAG         512ed55ecd4a694644b83ac9971487f8131348e9
+    GIT_TAG         7d4762b4e24041f49756d0a81adfed21beafd2ed
     GIT_SHALLOW     OFF
     GIT_PROGRESS    ON
 )