Bump golang from 4a3c2bc to 2fe82a3 in /tests (#2677)

Bumps golang from `4a3c2bc` to `2fe82a3`.

---
updated-dependencies:
- dependency-name: golang
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

tests/Dockerfile

@@ -1,5 +1,5 @@
 # The Dockerfile's resulting image is purpose-built for executing Jaeger Operator e2e tests within the OpenShift release (https://github.com/openshift/release) using Prow CI.
-FROM golang@sha256:4a3c2bcd243d3dbb7b15237eecb0792db3614900037998c2cd6a579c46888c1e
+FROM golang@sha256:2fe82a3f3e006b4f2a316c6a21f62b66e1330ae211d039bb8d1128e12ed57bf1
 
 # Set the user to root
 USER root