Add Go 1.26 to CI flow

Merge pull request #144 from aldas/retract_v0_50_0

Prepare `v5` release series

Update deps

Update deps

Use Echo `v5` tag

Update deps (#131)

update deps - mostly relates to GHSA-vvgc-356p-c3xw

update deps (#128)

* update deps

* CI: update used Go versions

update deps

Upgrade dependencies (#115)

Fix inject span context into request header (#110)