Bump fetch-mock from 11.1.5 to 12.1.0 in /webui #2150

Job	Run time
pipeline/seq_retrieval update and upload dependency lock file	24s
api update and upload dependency lock file	43s
define container image build context variables	1s
shared_aws py-package update and upload dependency lock file	34s
webui update and upload dependency lock file	37s
report-no-deps-lock-updates-label	0s
pipeline/alignment container-image build	1m 7s
pipeline/seq_retrieval container-image build	1m 30s
pipeline/seq_retrieval code checks	37s
API code checks	24s
API container-image build	1m 16s
shared_aws py-package code checks	52s
webUI container-image build	1m 55s
webUI code checks	38s
pipeline/alignment unit testing	22s
API unit and integration testing	1m 28s
pipeline/workflow integration testing	2m 8s
shared_aws python package build	20s
API container integration testing (AWS batch execution)	3m 53s
shared_aws aws_infra update and upload dependency lock file	39s
api/aws_infra update and upload dependency lock file	34s
pipeline/aws_infra update and upload dependency lock file	48s
webui/aws_infra update and upload dependency lock file	31s
end-to-end testing	4m 31s
webui/aws_infra code checks	1m 22s
api/aws_infra code checks	1m 37s
shared_aws infra code checks	56s
pipeline/aws_infra code checks	54s
stage-deps-lock-updates	10s
	30m 51s

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