Upterm 0.14.2

What's Changed

• Bump google.golang.org/protobuf from 1.33.0 to 1.34.1 by @dependabot in #255
• Bump golang.org/x/term from 0.19.0 to 0.20.0 by @dependabot in #254
• Add README for action-upterm by @owenthereal in #257
• Codeberg user authorized key support by @toastal in #256
• Bump github.com/prometheus/client_golang from 1.19.0 to 1.19.1 by @dependabot in #258
• Reduce ssh upstream timeout by @owenthereal in #260
• Bump google.golang.org/grpc from 1.63.2 to 1.64.0 by @dependabot in #259
• Use minimum distroless base image by @owenthereal in #261

Full Changelog: v0.13.5...v0.14.2