Fix `TestIMDSAuth` test by increasing root volume size #2874

Job	Run time
comment-notification	0s
Run test of provider shim	48m 54s
Run upstream provider-lint	38m 28s
License Check / License Check	2m 46s
prerequisites / prerequisites	35m 19s
build_provider / Build linux-amd64	16m 21s
build_provider / Build linux-arm64	17m 50s
build_sdk / build_sdk (nodejs)	19m 25s
build_provider / Build darwin-amd64	6m 16s
build_sdk / build_sdk (python)	18m 39s
build_provider / Build darwin-arm64	16m 30s
build_sdk / build_sdk (dotnet)	19m 21s
build_provider / Build windows-amd64	16m 32s
build_sdk / build_sdk (go)	25m 51s
build_sdk / build_sdk (java)	7m 48s
provider_test (nodejs)	36m 7s
provider_test (python)	24m 20s
provider_test (dotnet)	18m 14s
test (nodejs, local)	47m 42s
test_oidc (nodejs)	22m 2s
provider_test (go)	18m 42s
test (python, local)	26m 47s
provider_test (java)	25m 17s
test (dotnet, local)	21m 44s
test (go, local)	41m 44s
test (java, local)	18m 50s
sentinel	1s
	9h 51m 30s

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