Bump golang from cefea7f to 7b297d9 in /tests (#2473)

Bumps golang from `cefea7f` to `7b297d9`.

---
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:cefea7fa6852b85f0042ce9d4b883c7e0b03b2bcb25972372d59e4f7c4367c04
+FROM golang@sha256:7b297d9abee021bab9046e492506b3c2da8a3722cbf301653186545ecc1e00bb
 
 # Set the user to root
 USER root