🗑️ deprecate: go 1.14 & go 1.15 support deprecation

[efectn]

Description

Deprecate Go 1.14 and Go 1.15 support due to they're really old versions and Fasthttp no longer supports them: valyala/fasthttp#1379

Type of change

• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• New and existing unit tests pass locally with my changes

Commit formatting:

Use emojis on commit messages so it provides an easy way of identifying the purpose or intention of a commit. Check out the emoji cheatsheet here: https://gitmoji.carloscuesta.me/

[ReneWerner87]

We need to adjust the docs https://docs.gofiber.io/#installation

[gaby]

Here's a list of PR's that can be merge once support for 1.14/1.15 dropped:

• Bump github.com/dgraph-io/ristretto from 0.1.0 to 0.1.1 in /ristretto storage#548
• Bump github.com/dgraph-io/badger/v3 from 3.2103.2 to 3.2103.3 in /badger storage#551
• build(deps): bump go.uber.org/zap from 1.21.0 to 1.23.0 in /fiberzap contrib#271

[sixcolors]

seems like a good choice to drop support < 1.16. And, 1.16 is a good minimum IMO

[shadow1163]

Readme.md still notices go version 1.14; it should be updated too.

[ReneWerner87]

yes sure
i miss a place :D ?