Depositor bot 5.1.0 release

What's Changed

• Use _vs signatures instead of separate v and s by @hweawer in #258
• Mellow E2E tests by @hweawer in #257
• Data Bus integration by @hweawer in #259
• Track transport messages by @hweawer in #261
• Subscribe to address topics by @hweawer in #263
• Track transport and type in message metrics by @hweawer in #262
• fix labels in metrics by @hweawer in #264
• Version in onchain metrics by @hweawer in #265
• Test unvet pause via data bus by @hweawer in #266
• Guardian balance metric by @hweawer in #267
• Release depositor bot by @hweawer in #268

Full Changelog: 5.0.4...5.0.5