fix: chkrootkit binary detection (#883) (#879)

Fallback to the default binary instead of failing if the path for the
chkrootkit brinary is not set in the configuration. Fail only if the
binary is not available on $PATH either.

Co-authored-by: Krisztian Gacsal <chrisgacsal@users.noreply.github.com>

go.mod

@@ -19,7 +19,7 @@ require (
 	github.com/aptible/supercronic v0.2.27
 	github.com/aws/aws-sdk-go-v2 v1.22.1
 	github.com/aws/aws-sdk-go-v2/config v1.21.0
-	github.com/aws/aws-sdk-go-v2/service/ec2 v1.129.0
+	github.com/aws/aws-sdk-go-v2/service/ec2 v1.130.0
 	github.com/aws/aws-sdk-go-v2/service/pricing v1.23.0
 	github.com/aws/smithy-go v1.16.0
 	github.com/cenkalti/backoff v2.2.1+incompatible

go.sum

@@ -474,8 +474,8 @@ github.com/aws/aws-sdk-go-v2/internal/ini v1.5.0 h1:DqOQvIfmGkXZUVJnl9VRk0AnxyS5
 github.com/aws/aws-sdk-go-v2/internal/ini v1.5.0/go.mod h1:VV/Kbw9Mg1GWJOT9WK+oTL3cWZiXtapnNvDSRqTZLsg=
 github.com/aws/aws-sdk-go-v2/service/ebs v1.18.1 h1:iUgGXA8fg41B4Of0F+BS766SRQ7c8rr5jtka8RgaocQ=
 github.com/aws/aws-sdk-go-v2/service/ebs v1.18.1/go.mod h1:9n0SC5yHomD8IjsR37+/txpdfNdpGSgV1RzmsTHrbWg=
-github.com/aws/aws-sdk-go-v2/service/ec2 v1.129.0 h1:JvVEi23qADpNUwdO+LsMpWjIIVKnZjaJmOOwaTdQXXk=
-github.com/aws/aws-sdk-go-v2/service/ec2 v1.129.0/go.mod h1:dvf5pEODLPXl7WdxIAvQfmHXeOpiA0ODrL1mU7tp6Is=
+github.com/aws/aws-sdk-go-v2/service/ec2 v1.130.0 h1:a7CPCX/m+owAiAqcK8W9/SoB7EA4QUE4BddYdFyEGco=
+github.com/aws/aws-sdk-go-v2/service/ec2 v1.130.0/go.mod h1:EJlGVMO5zynmSDdvwJfFa2RzAZoHI4gVJER0h82/dYk=
 github.com/aws/aws-sdk-go-v2/service/ecr v1.18.11 h1:wlTgmb/sCmVRJrN5De3CiHj4v/bTCgL5+qpdEd0CPtw=
 github.com/aws/aws-sdk-go-v2/service/ecr v1.18.11/go.mod h1:Ce1q2jlNm8BVpjLaOnwnm5v2RClAbK6txwPljFzyW6c=
 github.com/aws/aws-sdk-go-v2/service/ecrpublic v1.16.2 h1:yflJrGmi1pXtP9lOpOeaNZyc0vXnJTuP2sor3nJcGGo=