Tests

Make `bls.Signer` api fallible #10727

Job	Run time
Fuzz	29s
Unit (macos-14)	14s
Protobuf Lint	4s
e2e	29s
Unit (ubuntu-20.04)	15s
e2e_existing_network	27s
Unit (ubuntu-22.04)	10s
Unit (ubuntu-24.04)	15s
Upgrade	29s
Lint	30s
Unit (windows-2022)	10s
Up-to-date protobuf	16s
Unit (custom-arm64-jammy)	16s
Up-to-date mocks	27s
Unit (custom-arm64-noble)	16s
Run bootstrap monitor e2e tests	28s
Up-to-date go.mod and go.sum	14s
Build Antithesis avalanchego images	15s
Image build	28s
Build Antithesis xsvm images	26s
	6m 38s

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