Bump github.com/mikefarah/yq/v4 from 4.17.2 to 4.18.1

Bumps [github.com/mikefarah/yq/v4](https://github.com/mikefarah/yq) from 4.17.2 to 4.18.1.
- [Release notes](https://github.com/mikefarah/yq/releases)
- [Changelog](https://github.com/mikefarah/yq/blob/master/release_notes.txt)
- [Commits](mikefarah/yq@v4.17.2...v4.18.1)

---
updated-dependencies:
- dependency-name: github.com/mikefarah/yq/v4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

go.mod

@@ -9,7 +9,7 @@ require (
 	github.com/go-logr/logr v0.4.0
 	github.com/go-stomp/stomp v2.1.4+incompatible
 	github.com/michaelklishin/rabbit-hole/v2 v2.12.0
-	github.com/mikefarah/yq/v4 v4.17.2
+	github.com/mikefarah/yq/v4 v4.18.1
 	github.com/onsi/ginkgo v1.16.5
 	github.com/onsi/gomega v1.18.0
 	github.com/rabbitmq/rabbitmq-stream-go-client v0.0.0-20210811090309-627299932bac
@@ -43,6 +43,7 @@ require (
 	github.com/Masterminds/sprig v2.22.0+incompatible // indirect
 	github.com/PuerkitoBio/purell v1.1.1 // indirect
 	github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 // indirect
+	github.com/a8m/envsubst v1.3.0 // indirect
 	github.com/alessio/shellescape v1.4.1 // indirect
 	github.com/asaskevich/govalidator v0.0.0-20190424111038-f61b66f89f4a // indirect
 	github.com/beorn7/perks v1.0.1 // indirect

go.sum

@@ -132,6 +132,8 @@ github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578/go.mod h1:uGdko
 github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo=
 github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
 github.com/VividCortex/gohistogram v1.0.0/go.mod h1:Pf5mBqqDxYaXu3hDrrU+w6nw50o/4+TcAqDqk/vUH7g=
+github.com/a8m/envsubst v1.3.0 h1:GmXKmVssap0YtlU3E230W98RWtWCyIZzjtf1apWWyAg=
+github.com/a8m/envsubst v1.3.0/go.mod h1:MVUTQNGQ3tsjOOtKCNd+fl8RzhsXcDvvAEzkhGtlsbY=
 github.com/afex/hystrix-go v0.0.0-20180502004556-fa1af6a1f4f5/go.mod h1:SkGFH1ia65gfNATL8TAiHDNxPzPdmEL5uirI2Uyuz6c=
 github.com/akavel/rsrc v0.8.0/go.mod h1:uLoCtb9J+EyAqh+26kdrTgmzRBFPGOolLWKpdxkKq+c=
 github.com/alcortesm/tgz v0.0.0-20161220082320-9c5fe88206d7/go.mod h1:6zEj6s6u/ghQa61ZWa/C2Aw3RkjiTBOix7dkqa1VLIs=
@@ -798,8 +800,8 @@ github.com/miekg/dns v1.1.26/go.mod h1:bPDLeHnStXmXAq1m/Ch/hvfNHr14JKNPMBo3VZKju
 github.com/miekg/dns v1.1.41/go.mod h1:p6aan82bvRIyn+zDIv9xYNUpwa73JcSh9BKwknJysuI=
 github.com/miekg/pkcs11 v1.0.2/go.mod h1:XsNlhZGX73bx86s2hdc/FuaLm2CPZJemRLMA+WTFxgs=
 github.com/miekg/pkcs11 v1.0.3/go.mod h1:XsNlhZGX73bx86s2hdc/FuaLm2CPZJemRLMA+WTFxgs=
-github.com/mikefarah/yq/v4 v4.17.2 h1:3ivt+m3Cbq12texkjlIGaIfViZc+vF8yrc8WzxaBFRs=
-github.com/mikefarah/yq/v4 v4.17.2/go.mod h1:XmBZyi6ckxRGZOlAaMD06sM3Hy0Q4BbwBUHrJEZq6pY=
+github.com/mikefarah/yq/v4 v4.18.1 h1:gBULkgs9hqOvNAikN+6kzdoXrhpQ6rbmVUIte9S2LZA=
+github.com/mikefarah/yq/v4 v4.18.1/go.mod h1:krTElh9V1fv3Cw7+21S8El/W/vn3f2buOOcJ4VyjsFY=
 github.com/mitchellh/cli v1.0.0/go.mod h1:hNIlj7HEI86fIcpObd7a0FcrxTWetlwJDGcceTlRvqc=
 github.com/mitchellh/cli v1.1.0/go.mod h1:xcISNoH86gajksDmfB23e/pu+B+GeFRMYmoHXxx3xhI=
 github.com/mitchellh/copystructure v1.0.0 h1:Laisrj+bAB6b/yJwB5Bt3ITZhGJdqmxquMKeZ+mmkFQ=