build(deps): bump github.com/Azure/go-autorest/autorest

Bumps [github.com/Azure/go-autorest/autorest](https://github.com/Azure/go-autorest) from 0.11.20 to 0.11.21.
- [Release notes](https://github.com/Azure/go-autorest/releases)
- [Changelog](https://github.com/Azure/go-autorest/blob/master/CHANGELOG.md)
- [Commits](https://github.com/Azure/go-autorest/compare/autorest/v0.11.20...autorest/v0.11.21)

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

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

go.sum

@@ -56,8 +56,8 @@ github.com/Azure/azure-storage-blob-go v0.14.0/go.mod h1:SMqIBi+SuiQH32bvyjngEew
 github.com/Azure/go-autorest v14.2.0+incompatible h1:V5VMDjClD3GiElqLWO7mz2MxNAK/vTfRHdAubSIPRgs=
 github.com/Azure/go-autorest v14.2.0+incompatible/go.mod h1:r+4oMnoxhatjLLJ6zxSWATqVooLgysK6ZNox3g/xq24=
 github.com/Azure/go-autorest/autorest v0.11.17/go.mod h1:eipySxLmqSyC5s5k1CLupqet0PSENBEDP93LQ9a8QYw=
-github.com/Azure/go-autorest/autorest v0.11.20 h1:s8H1PbCZSqg/DH7JMlOz6YMig6htWLNPsjDdlLqCx3M=
-github.com/Azure/go-autorest/autorest v0.11.20/go.mod h1:o3tqFY+QR40VOlk+pV4d77mORO64jOXSgEnPQgLK6JY=
+github.com/Azure/go-autorest/autorest v0.11.21 h1:w77zY/9RnUAWcIQyDC0Fc89mCvwftR8F+zsR/OH6enk=
+github.com/Azure/go-autorest/autorest v0.11.21/go.mod h1:Do/yuMSW/13ayUkcVREpsMHGG+MvV81uzSCFgYPj4tM=
 github.com/Azure/go-autorest/autorest/adal v0.9.5/go.mod h1:B7KF7jKIeC9Mct5spmyCB/A8CG/sEz1vwIRGv/bbw7A=
 github.com/Azure/go-autorest/autorest/adal v0.9.11/go.mod h1:nBKAnTomx8gDtl+3ZCJv2v0KACFHWTB2drffI1B68Pk=
 github.com/Azure/go-autorest/autorest/adal v0.9.13/go.mod h1:W/MM4U6nLxnIskrw4UwWzlHfGjwUS50aOsc/I3yuU8M=