Update ironbank base image to ubi 8.7

[amannocci]

Signed-off-by: Adrien Mannocci [email protected]

What does this PR do?

• Update ironbank base image to ubi 8.7

Why is it important?

• We need to use the latest ubi 8.x base image available.

[mergify]

This pull request does not have a backport label. Could you fix it @amannocci? 🙏
To fixup this pull request, you need to add the backport labels for the needed
branches, such as:

• backport-v./d./d./d is the label to automatically backport to the 8./d branch. /d is the digit

NOTE: backport-skip has been added to this pull request.

[elasticmachine]

💚 Build Succeeded

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Build stats

• Start Time: 2022-12-27T10:05:10.438+0000

• Duration: 47 min 1 sec

Test stats 🧪

Test	Results
Failed	0
Passed	4749
Skipped	13
Total	4762

💚 Flaky test report

Tests succeeded.

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[elasticmachine]

🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	98.305% (58/59)	👍
Files	69.268% (142/205)	👍
Classes	69.231% (270/390)	👍
Methods	54.128% (826/1526)	👍
Lines	39.281% (8976/22851)	👍 0.044
Conditionals	100.0% (0/0)	💚