Tests

Make `bls.Signer` api fallible #10736

Job	Run time
Fuzz	2m 13s
e2e	2m 15s
e2e_existing_network	2m 15s
Unit (macos-14)	2m 13s
Protobuf Lint	5s
Unit (ubuntu-20.04)	2m 13s
Unit (ubuntu-22.04)	2m 11s
Up-to-date protobuf	15s
Lint	2m 13s
Unit (ubuntu-24.04)	2m 12s
Upgrade	2m 14s
Unit (windows-2022)	1m 57s
Up-to-date mocks	2m 12s
Unit (custom-arm64-jammy)	2m 14s
Up-to-date go.mod and go.sum	23s
Unit (custom-arm64-noble)	2m 14s
Build Antithesis avalanchego images	2m 11s
Image build	2m 11s
Build Antithesis xsvm images	2m 12s
Run bootstrap monitor e2e tests	2m 14s
	38m 7s

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