automation: remove bump snapshots

[v1v]

What

testing/environments/snapshot.*\.yml$ don't exist in this project hence let's remove all the moving pieces

[mergify]

This pull request does not have a backport label. Could you fix it @v1v? 🙏
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: 2023-02-10T11:28:54.443+0000

• Duration: 19 min 54 sec

Test stats 🧪

Test	Results
Failed	0
Passed	4893
Skipped	13
Total	4906

💚 Flaky test report

Tests succeeded.

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[elasticmachine]

🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	98.333% (59/60)	👍
Files	69.082% (143/207)	👍
Classes	68.514% (272/397)	👍
Methods	53.831% (836/1553)	👍
Lines	39.013% (9113/23359)	👍
Conditionals	100.0% (0/0)	💚