PROCTools: More improvements to update references script

In !62281 (merged) I realised that the script didn't support:

• simultaneous digest and pool changes in one MR
• multi-line diff changes

This MR significantly simplifies diff handling (using the fact that event/run is a unique identifier and so we don't need more than this to identify which line to change) and now supports both of the above

cc @atlas-release-coordinators

Build area was cleaned as per request posted in the DB. The full software build will be performed

This merge request affects 1 package:

• Tools/PROCTools

This merge request affects 1 file:

• Tools/PROCTools/scripts/update_ci_reference_files.py

added Tools main review-pending-level-1 labels

CI Result SUCCESS (hash d3d4f640)

	Athena	AthSimulation
externals
cmake
make
tests

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Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-EL9 1005]

MR looks fine from L1 perspective - Approving.

Cheers, Steffen (L1)

added review-approved label and removed review-pending-level-1 label

merged

mentioned in commit e6617e11