deps(docker): bump kopia version for kanister-tools

[hairyhum]

Change Overview

Use current master of kopia to build kanister-tools image

Not using the current master because it messes up with the go toolchain at the moment.

Pull request type

Please check the type of change your PR introduces:

• 🚧 Work in Progress
• 🌈 Refactoring (no functional changes, no api changes)
• 🐹 Trivial/Minor
• 🐛 Bugfix
• 🌻 Feature
• 🗺️ Documentation
• 🤖 Test
• 🏗️ Build

Issues

• fixes #issue-number

Test Plan

• 💪 Manual
• ⚡ Unit test
• 💚 E2E

[julio-lopez]

Unpinning may have undesired side-effects, such as

• inadvertently upgrading and picking up a different version of kopia on every build (or invocation of goreleaser).
• not being able reprodude a released version with the same version of kopia that was used when it got released.
• also, there is a specific kopia dependency in go.mod, which is kept in sync with the one here. The version used here should be pulled from go.mod at build time.

[hairyhum]

also, there is a specific kopia dependency in go.mod, which is kept in sync with the one here. The version used here should be pulled from go.mod at build time.

That's a good point, but this means we didn't keep kopia version in go.mod up to date. Pulling version from go.mod should be possible.

[hairyhum]

Bumped kopia commit in go.mod and goreleaser.
Not using the latest version because we have issue updating the build image right now https://github.com/kanisterio/kanister/actions/runs/11295843718