allow APK auth using assumable identity (#1230)

This adds a dep on chainguard.dev/sdk, which is kind of big,
unfortunately.

---------

Signed-off-by: Jason Hall <jason@chainguard.dev>

go.mod

@@ -3,6 +3,7 @@ module chainguard.dev/apko
 go 1.22.5
 
 require (
+	chainguard.dev/sdk v0.1.21
 	github.com/MakeNowJust/heredoc/v2 v2.0.1
 	github.com/chainguard-dev/clog v1.4.0
 	github.com/charmbracelet/log v0.4.0
@@ -27,24 +28,32 @@ require (
 	go.lsp.dev/uri v0.3.0
 	go.opentelemetry.io/otel v1.28.0
 	go.opentelemetry.io/otel/trace v1.28.0
-	golang.org/x/exp v0.0.0-20240222234643-814bf88cf225
+	golang.org/x/exp v0.0.0-20240613232115-7f521ea00fb8
 	golang.org/x/sync v0.7.0
 	golang.org/x/sys v0.22.0
 	golang.org/x/time v0.5.0
+	google.golang.org/api v0.188.0
 	gopkg.in/ini.v1 v1.67.0
 	gopkg.in/yaml.v3 v3.0.1
 	k8s.io/apimachinery v0.30.3
 	sigs.k8s.io/release-utils v0.8.4
 )
 
 require (
+	chainguard.dev/go-grpc-kit v0.17.5 // indirect
+	cloud.google.com/go/auth v0.7.0 // indirect
+	cloud.google.com/go/auth/oauth2adapt v0.2.2 // indirect
+	cloud.google.com/go/compute/metadata v0.5.0 // indirect
 	dario.cat/mergo v1.0.0 // indirect
 	github.com/Microsoft/go-winio v0.6.2 // indirect
 	github.com/ProtonMail/go-crypto v1.0.0 // indirect
 	github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2 // indirect
 	github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect
 	github.com/bahlo/generic-list-go v0.2.0 // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/buger/jsonparser v1.1.1 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/chainguard-dev/slogctx v1.2.2 // indirect
 	github.com/charmbracelet/lipgloss v0.10.0 // indirect
 	github.com/cloudflare/circl v1.3.7 // indirect
 	github.com/common-nighthawk/go-figure v0.0.0-20210622060536-734e95fb86be // indirect
@@ -79,11 +88,18 @@ require (
 	github.com/go-openapi/validate v0.24.0 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
+	github.com/golang/protobuf v1.5.4 // indirect
+	github.com/google/s2a-go v0.1.7 // indirect
 	github.com/google/uuid v1.6.0 // indirect
+	github.com/googleapis/enterprise-certificate-proxy v0.3.2 // indirect
+	github.com/grpc-ecosystem/go-grpc-middleware v1.4.0 // indirect
+	github.com/grpc-ecosystem/go-grpc-prometheus v1.2.1-0.20210315223345-82c243799c99 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.20.0 // indirect
 	github.com/hashicorp/go-cleanhttp v0.5.2 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
+	github.com/kelseyhightower/envconfig v1.4.0 // indirect
 	github.com/kevinburke/ssh_config v1.2.0 // indirect
 	github.com/letsencrypt/boulder v0.0.0-20240722223108-48439e453245 // indirect
 	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
@@ -95,13 +111,18 @@ require (
 	github.com/moby/docker-image-spec v1.3.1 // indirect
 	github.com/muesli/reflow v0.3.0 // indirect
 	github.com/muesli/termenv v0.15.2 // indirect
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/oklog/ulid v1.3.1 // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.1.0 // indirect
 	github.com/pierrec/lz4/v4 v4.1.21 // indirect
 	github.com/pjbgf/sha1cd v0.3.0 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
+	github.com/prometheus/client_golang v1.19.1 // indirect
+	github.com/prometheus/client_model v0.6.1 // indirect
+	github.com/prometheus/common v0.55.0 // indirect
+	github.com/prometheus/procfs v0.15.1 // indirect
 	github.com/rivo/uniseg v0.4.7 // indirect
 	github.com/secure-systems-lab/go-securesystemslib v0.8.0 // indirect
 	github.com/sergi/go-diff v1.3.2-0.20230802210424-5b0b94c5c0d3 // indirect
@@ -116,12 +137,19 @@ require (
 	github.com/wk8/go-ordered-map/v2 v2.1.8 // indirect
 	github.com/xanzy/ssh-agent v0.3.3 // indirect
 	go.mongodb.org/mongo-driver v1.14.0 // indirect
+	go.opencensus.io v0.24.0 // indirect
+	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.53.0 // indirect
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.52.0 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.28.0 // indirect
 	go.opentelemetry.io/otel/metric v1.28.0 // indirect
 	golang.org/x/crypto v0.25.0 // indirect
 	golang.org/x/net v0.27.0 // indirect
+	golang.org/x/oauth2 v0.21.0 // indirect
 	golang.org/x/term v0.22.0 // indirect
+	golang.org/x/text v0.16.0 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20240701130421-f6361c86f094 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20240708141625-4ad9e859172b // indirect
+	google.golang.org/grpc v1.65.0 // indirect
 	google.golang.org/protobuf v1.34.2 // indirect
 	gopkg.in/warnings.v0 v0.1.2 // indirect
 	gotest.tools/v3 v3.5.1 // indirect