Change MSI ProductCode on every release (#5929)

* Change MSI ProductCode on every release

* Changes to `packaging/msi/**` should trigger MSI tests

Author: pjanotti

.github/workflows/win-package-test.yml

@@ -13,6 +13,7 @@ on:
       - 'internal/**'
       - 'Makefile'
       - 'Makefile.Common'
+      - 'packaging/msi/**'
       - 'tests/zeroconfig/windows/**'
       - '!**.md'
 

packaging/msi/splunk-otel-collector.wxs

@@ -1,5 +1,5 @@
 <Wix xmlns="http://schemas.microsoft.com/wix/2006/wi">
-   <Product Id="24E519F6-7F01-43DB-9E72-3B8AD8F065F4" UpgradeCode="fde3e4d9-9ca5-4c82-be7b-81445ab5b605" Name="Splunk OpenTelemetry Collector" Version="$(var.Version)" Manufacturer="Splunk, Inc." Language="1033">
+   <Product Id="*" UpgradeCode="fde3e4d9-9ca5-4c82-be7b-81445ab5b605" Name="Splunk OpenTelemetry Collector" Version="$(var.Version)" Manufacturer="Splunk, Inc." Language="1033">
       <Package InstallerVersion="200" Compressed="yes" Comments="Windows Installer Package" InstallPrivileges="elevated" InstallScope="perMachine" />
       <Media Id="1" Cabinet="product.cab" EmbedCab="yes"/>
       <Icon Id="ProductIcon" SourceFile="$(sys.SOURCEFILEDIR)/splunk.ico"/>