Bump github.com/go-openapi/spec from 0.20.5 to 0.20.6

Bumps [github.com/go-openapi/spec](https://github.com/go-openapi/spec) from 0.20.5 to 0.20.6.
- [Release notes](https://github.com/go-openapi/spec/releases)
- [Commits](go-openapi/spec@v0.20.5...v0.20.6)

---
updated-dependencies:
- dependency-name: github.com/go-openapi/spec
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -16,7 +16,7 @@ require (
 	github.com/go-openapi/errors v0.20.2
 	github.com/go-openapi/loads v0.21.1
 	github.com/go-openapi/runtime v0.24.0
-	github.com/go-openapi/spec v0.20.5
+	github.com/go-openapi/spec v0.20.6
 	github.com/go-openapi/strfmt v0.21.2
 	github.com/go-openapi/swag v0.21.1
 	github.com/go-openapi/validate v0.21.0

go.sum

@@ -598,8 +598,8 @@ github.com/go-openapi/runtime v0.24.0 h1:vTgDijpGLCgJOJTdAp5kG+O+nRsVCbH417YQ3O0
 github.com/go-openapi/runtime v0.24.0/go.mod h1:AKurw9fNre+h3ELZfk6ILsfvPN+bvvlaU/M9q/r9hpk=
 github.com/go-openapi/spec v0.19.3/go.mod h1:FpwSN1ksY1eteniUU7X0N/BgJ7a4WvBFVA8Lj9mJglo=
 github.com/go-openapi/spec v0.20.4/go.mod h1:faYFR1CvsJZ0mNsmsphTMSoRrNV3TEDoAM7FOEWeq8I=
-github.com/go-openapi/spec v0.20.5 h1:skHa8av4VnAtJU5zyAUXrrdK/NDiVX8lchbG+BfcdrE=
-github.com/go-openapi/spec v0.20.5/go.mod h1:QbfOSIVt3/sac+a1wzmKbbcLXm5NdZnyBZYtCijp43o=
+github.com/go-openapi/spec v0.20.6 h1:ich1RQ3WDbfoeTqTAb+5EIxNmpKVJZWBNah9RAT0jIQ=
+github.com/go-openapi/spec v0.20.6/go.mod h1:2OpW+JddWPrpXSCIX8eOx7lZ5iyuWj3RYR6VaaBKcWA=
 github.com/go-openapi/strfmt v0.21.0/go.mod h1:ZRQ409bWMj+SOgXofQAGTIo2Ebu72Gs+WaRADcS5iNg=
 github.com/go-openapi/strfmt v0.21.1/go.mod h1:I/XVKeLc5+MM5oPNN7P6urMOpuLXEcNrCX/rPGuWb0k=
 github.com/go-openapi/strfmt v0.21.2 h1:5NDNgadiX1Vhemth/TH4gCGopWSTdDjxl60H3B7f+os=