ci: update GitHub actions for Redis and MongoDB

- Update Redis GitHub action from version 1.4.0 to 1.8.0
- Update MongoDB GitHub action from version 1.8.0 to 1.11.0

Signed-off-by: appleboy <[email protected]>

chore: update core golang.org/x dependencies

- Update `golang.org/x/crypto` dependency from `v0.21.0` to `v0.22.0`
- Update `golang.org/x/net` dependency from `v0.22.0` to `v0.24.0`
- Update `golang.org/x/sys` dependency from `v0.18.0` to `v0.19.0`

Signed-off-by: Bo-Yi Wu <[email protected]>

docs: Update README.md (#260)

chore: add goreleaser config.

Signed-off-by: Bo-Yi Wu <[email protected]>

Fix tests by providing a PostgreSQL database container (#141)

chore: update name rule

Session Cookie Options: add support for SameSite cookie. (#106)

SameSite cookie is used to prevent CSRF attack.It is supported by modern browsers and in RFC draft.

REFS:
   RFC draft: https://tools.ietf.org/html/draft-west-first-party-cookies-07
   upstream support:  [golang](https://godoc.org/net/http#SameSite)
                      [gorilla/sessions](https://godoc.org/github.com/gorilla/sessions#Options)
   supports of browser: https://caniuse.com/#feat=same-site-cookie-attribute

Signed-off-by: lilinzhe <[email protected]>

Support for multiple sessions (#88)

* support for multiple sessions

* correctly make Session map

* testing for multiple sessions

* README for multiple sessions

* fix README formatting

* fix README formatting, part 2

* move backend examples to top

* embedmd support

* fix embedmd references

* README embedmd support pt.3

* fix README formatting