* Moved internal/allocator.Buffers to package internal/xstring

[asmyasnikov]

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BenchmarkBufferWithPool-8      	51107196	        22.97 ns/op	       0 B/op	       0 allocs/op
BenchmarkBufferWithoutPool-8   	27986596	        46.01 ns/op	      64 B/op	       1 allocs/op

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Other (please describe):

What is the current behavior?

Issue Number: N/A

What is the new behavior?

Other information

[github-actions]

summary

Base version: v3.53.5-0.20231023210957-e1a1bb576efd (master)
Cannot suggest a release version.
Can only suggest a release version when compared against the most recent version of this major: v3.53.4.