Deduplicate base64

[nox]

Latest release is 0.12, brought in crate tree through #26005.

Dependencies that already depend on 0.12 that we need to bump on our side:

• headers
  • warp
  • hyper_serde

Dependencies on 0.10 that Mozilla people maintain:

• webdriver (depends on warp)
• webrender

Dependencies on 0.10 that require upstream changes:

• influent

Dependencies on 0.11 that require upstream changes:

• rust-argon2
  • redox_users

[Eijebong]

For info: webdriver -> https://bugzilla.mozilla.org/show_bug.cgi?id=1606281

[Eijebong]

Also I just published influent 0.5.3 with base64 0.12

[Eijebong]

Influent will also need an update for tokio. Is it really something useful for servo ? I'm currently kind of maintaining for dep updates but I don't have any real motivation to do so.

[atouchet]

base64 0.12 was removed in #29766.

[jdm]

rust-ammonia/rust-content-security-policy#36

[jdm]

hyperium/headers#140

[dvtkrlbs]

I looked at this issue for bumping to 0.21.2. The problem is this bumps MSRV and some crates are reluctant to also bump it i.e headers. Should we go with base64 or switch to data encoding. Which still uses 0.47 as MSRV and API is still very similiar to previous base64 api design.

[jdm]

I'm not sure if switching to data-encoding will make a big difference unless we convince all of the crates that currently depend on base64 to switch as well.

[dvtkrlbs]

Ok that makes sense I will open a pr for updating to 0.21.2. There are still a few upstream crates that are on 0.10 and 0.13 but there is nothing other than waiting for them.