feat: update config.yml to point to latest benchmark input data (#104)

The configuration currently points to benchmark input data containing both the real MSCI data and MSCI ETF data. 

It was decided in https://dev.azure.com/RMI-PACTA/2DegreesInvesting/_workitems/edit/11078/ to only include ETF data if there was no real index data.

This was implemented here: RMI-PACTA/workflow.benchmark.preparation#6

But requires a similar change in the configuration file, that this PR hopes to address. 

Likely closes:
https://dev.azure.com/RMI-PACTA/2DegreesInvesting/_workitems/edit/11076
and
https://dev.azure.com/RMI-PACTA/2DegreesInvesting/_workitems/edit/11078

config.yml

@@ -11,4 +11,4 @@ default:
 2023Q4:
   project_code: "PA2024CH"
   pacta_financial_timestamp: "2023Q4"
-  benchmark_inputs_filename: "2023Q4_benchmark_portfolios_20240607-110113.rds"
+  benchmark_inputs_filename: "2023Q4_benchmark_portfolios_20240717-002743.rds"