chore(deps): update go toolchain directive to v1.26.5

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
go (source)	toolchain	minor	1.24.6 → 1.26.5

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Release Notes

golang/go (go)

v1.26.5

v1.26.4

v1.26.3

v1.26.2

v1.26.1

v1.26.0

v1.25.12

v1.25.11

v1.25.10

v1.25.9

v1.25.8

v1.25.7

v1.25.6

v1.25.5

v1.25.4

v1.25.3

v1.25.2

v1.25.1

v1.25.0

v1.24.13

v1.24.12

v1.24.11

v1.24.10

v1.24.9

v1.24.8

v1.24.7

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