Bug 1959977 - Bump the gecko profiler format version after adding sourceIndexes r=mstange,profiler-reviewers

This requires frontend changes:
firefox-devtools/profiler#5506

Differential Revision: https://phabricator.services.mozilla.com/D259256

Author: canova

mozglue/baseprofiler/public/BaseAndGeckoProfilerDetail.h

@@ -24,7 +24,7 @@ namespace mozilla {
 class ProfileBufferChunkManagerWithLocalLimit;
 
 // Centrally defines the version of the gecko profiler JSON format.
-const int GECKO_PROFILER_FORMAT_VERSION = 31;
+const int GECKO_PROFILER_FORMAT_VERSION = 32;
 
 namespace baseprofiler::detail {