Merged PR 45620: Update DIA to 17.12.0-beta1.24603.5

Update DIA to 17.12.0-beta1.24603.5

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#### AI description  (iteration 1)
#### PR Classification
Version update

#### PR Summary
This pull request updates the version of MicrosoftDiaSymReaderNative to 17.12.0-beta1.24603.5.
- `eng/Versions.props`: Updated `MicrosoftDiaSymReaderNativeVersion` to 17.12.0-beta1.24603.5.

Author: Tom McDonald

eng/Versions.props

@@ -167,7 +167,7 @@
     <optimizationlinuxarm64MIBCRuntimeVersion>1.0.0-prerelease.23566.3</optimizationlinuxarm64MIBCRuntimeVersion>
     <optimizationPGOCoreCLRVersion>1.0.0-prerelease.23566.3</optimizationPGOCoreCLRVersion>
     <!-- Not auto-updated. -->
-    <MicrosoftDiaSymReaderNativeVersion>17.10.0-beta1.24272.1</MicrosoftDiaSymReaderNativeVersion>
+    <MicrosoftDiaSymReaderNativeVersion>17.12.0-beta1.24603.5</MicrosoftDiaSymReaderNativeVersion>
     <SystemCommandLineVersion>2.0.0-beta4.23307.1</SystemCommandLineVersion>
     <TraceEventVersion>3.0.3</TraceEventVersion>
     <NETStandardLibraryRefVersion>2.1.0</NETStandardLibraryRefVersion>