fix: allow bom build and verification for build_only layers (projec…

…t-stacker#609)

* fix: allow bom build and verification for `build_only` layers

From our experience, package information may be removed in such layers
making it much harder to discover and auto-construct BOMs.

So allow this for `build_only` layers also.

Signed-off-by: Ramkumar Chinchani <rchincha@cisco.com>

* fix: import a bom only if available from built layers

It is possible that a build_only layer doesn't generate a BOM, so it
cannot be imported in a derived layer.

Signed-off-by: Ramkumar Chinchani <rchincha@cisco.com>

---------

Signed-off-by: Ramkumar Chinchani <rchincha@cisco.com>

go.mod

@@ -34,9 +34,9 @@ require (
 	github.com/urfave/cli/v2 v2.25.0
 	github.com/vbatts/go-mtree v0.5.3
 	golang.org/x/sys v0.16.0
-	golang.org/x/term v0.15.0
+	golang.org/x/term v0.16.0
 	gopkg.in/yaml.v2 v2.4.0
-	sigs.k8s.io/bom v0.5.2-0.20231020154325-c94debbb2690
+	sigs.k8s.io/bom v0.6.0
 	sigs.k8s.io/yaml v1.3.0
 	stackerbuild.io/stacker-bom v0.0.0-00010101000000-000000000000
 )
@@ -58,7 +58,6 @@ require (
 	github.com/VividCortex/ewma v1.2.0 // indirect
 	github.com/acarl005/stripansi v0.0.0-20180116102854-5a71ef0e047d // indirect
 	github.com/acobaugh/osrelease v0.1.0 // indirect
-	github.com/acomagu/bufpipe v1.0.4 // indirect
 	github.com/adrg/xdg v0.4.0 // indirect
 	github.com/anchore/clio v0.0.0-20231016125544-c98a83e1c7fc // indirect
 	github.com/anchore/fangs v0.0.0-20230818131516-2186b10924fe // indirect
@@ -111,10 +110,10 @@ require (
 	github.com/gabriel-vasile/mimetype v1.4.2 // indirect
 	github.com/ghodss/yaml v1.0.0 // indirect
 	github.com/github/go-spdx/v2 v2.2.0 // indirect
-	github.com/glebarez/go-sqlite v1.21.2 // indirect
+	github.com/glebarez/go-sqlite v1.22.0 // indirect
 	github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376 // indirect
 	github.com/go-git/go-billy/v5 v5.5.0 // indirect
-	github.com/go-git/go-git/v5 v5.9.0 // indirect
+	github.com/go-git/go-git/v5 v5.11.0 // indirect
 	github.com/go-logr/logr v1.3.0 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-openapi/analysis v0.21.4 // indirect
@@ -133,7 +132,7 @@ require (
 	github.com/golang/protobuf v1.5.3 // indirect
 	github.com/golang/snappy v0.0.4 // indirect
 	github.com/google/go-cmp v0.6.0 // indirect
-	github.com/google/go-containerregistry v0.16.1 // indirect
+	github.com/google/go-containerregistry v0.17.0 // indirect
 	github.com/google/go-intervals v0.0.2 // indirect
 	github.com/google/licensecheck v0.3.1 // indirect
 	github.com/google/licenseclassifier/v2 v2.0.0 // indirect
@@ -220,7 +219,7 @@ require (
 	github.com/sigstore/fulcio v1.0.0 // indirect
 	github.com/sigstore/rekor v1.0.1 // indirect
 	github.com/sigstore/sigstore v1.6.5 // indirect
-	github.com/skeema/knownhosts v1.2.0 // indirect
+	github.com/skeema/knownhosts v1.2.1 // indirect
 	github.com/smartystreets/assertions v1.2.0 // indirect
 	github.com/sourcegraph/conc v0.3.0 // indirect
 	github.com/spdx/tools-golang v0.5.3 // indirect
@@ -258,15 +257,15 @@ require (
 	go.opentelemetry.io/otel/metric v1.21.0 // indirect
 	go.opentelemetry.io/otel/trace v1.21.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
-	golang.org/x/crypto v0.16.0 // indirect
+	golang.org/x/crypto v0.18.0 // indirect
 	golang.org/x/exp v0.0.0-20231206192017-f3f8817b8deb // indirect
 	golang.org/x/mod v0.14.0 // indirect
-	golang.org/x/net v0.19.0 // indirect
-	golang.org/x/sync v0.5.0 // indirect
+	golang.org/x/net v0.20.0 // indirect
+	golang.org/x/sync v0.6.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
-	golang.org/x/tools v0.16.1 // indirect
+	golang.org/x/tools v0.17.0 // indirect
 	golang.org/x/tools/go/vcs v0.1.0-deprecated // indirect
-	golang.org/x/xerrors v0.0.0-20220907171357-04be3eba64a2 // indirect
+	golang.org/x/xerrors v0.0.0-20231012003039-104605ab7028 // indirect
 	google.golang.org/genproto v0.0.0-20231211222908-989df2bf70f3 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20231212172506-995d672761c0 // indirect
 	google.golang.org/grpc v1.60.0 // indirect
@@ -275,16 +274,16 @@ require (
 	gopkg.in/square/go-jose.v2 v2.6.0 // indirect
 	gopkg.in/warnings.v0 v0.1.2 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
-	modernc.org/libc v1.24.1 // indirect
-	modernc.org/mathutil v1.5.0 // indirect
-	modernc.org/memory v1.6.0 // indirect
-	modernc.org/sqlite v1.26.0 // indirect
+	modernc.org/libc v1.37.6 // indirect
+	modernc.org/mathutil v1.6.0 // indirect
+	modernc.org/memory v1.7.2 // indirect
+	modernc.org/sqlite v1.28.0 // indirect
 	pault.ag/go/debian v0.15.0 // indirect
 	pault.ag/go/topsort v0.1.1 // indirect
-	sigs.k8s.io/release-utils v0.7.5 // indirect
+	sigs.k8s.io/release-utils v0.7.7 // indirect
 )
 
 replace (
 	github.com/opencontainers/umoci => github.com/project-stacker/umoci v0.0.0-20240329212141-3b35cc5bf2ab
-	stackerbuild.io/stacker-bom => github.com/project-stacker/stacker-bom v0.0.6-0.20240227180605-9a3eb8f7f720
+	stackerbuild.io/stacker-bom => github.com/rchincha/stacker-bom v0.0.0-20240425032919-aed4e544205f
 )