Add stretchr/testify & update min version to go1.19

[gaby]

• Use https://github.com/stretchr/testify in place of utils.AssertEqual() for all storage drivers
• Update Redis Cluster GitHub Action
• Cleanup all go.mod files
• Update min version of all drivers to go1.19
• Added go1.21 to all test files
• Migrate all usage of gofiber/utils to v2

[gaby]

Should the major version of the drivers that no longer support go1.17 and go1.18 be bump?

[ReneWerner87]

almost perfect, just one little adjustment needed

[gaby]

Should the major version of the drivers that no longer support go1.17 and go1.18 be bump?

^Only thing still TODO, is this.

[ReneWerner87]

Should the major version of the drivers that no longer support go1.17 and go1.18 be bump?

^Only thing still TODO, is this.

yes lets do this

[gaby]

Should the major version of the drivers that no longer support go1.17 and go1.18 be bump?

^Only thing still TODO, is this.

yes lets do this

Done, most of the drivers are now v2 except for like 2-3 that are now v3. I also updated all the README files.