Fix wrongly dropped transformer

[ReToCode]

Changes

https://github.com/knative/operator/pull/1577 accidentally dropped the JobTransformer. This adds it back.

/assign @pierDipi

[codecov[bot]]

Codecov Report

All modified lines are covered by tests :white_check_mark:

Comparison is base (d2e3906) 79.26% compared to head (e9ffee4) 79.33%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## release-1.10 #1580 +/- ## ================================================ + Coverage 79.26% 79.33% +0.06% ================================================ Files 41 41 Lines 1804 1805 +1 ================================================ + Hits 1430 1432 +2 + Misses 272 271 -1 Partials 102 102 ``` | [Files](https://app.codecov.io/gh/knative/operator/pull/1580?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=knative) | Coverage Δ | | |---|---|---| | [pkg/reconciler/common/transformers.go](https://app.codecov.io/gh/knative/operator/pull/1580?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=knative#diff-cGtnL3JlY29uY2lsZXIvY29tbW9uL3RyYW5zZm9ybWVycy5nbw==) | `85.71% <100.00%> (+0.52%)` | :arrow_up: | ... and [1 file with indirect coverage changes](https://app.codecov.io/gh/knative/operator/pull/1580/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=knative)

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[knative-prow[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: pierDipi, ReToCode

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