Release 3.0.73

https://pub.dev/packages/at_client/changelog#3073

What's Changed

• chore: Update cert in testdata by @atsignbot in #1208
• fix: added unit tests for self key encryption and shared key encryption by @murali-shris in #1197
• fix: at_commons 4.0.0 uptake in at_Client by @purnimavenkatasubbu in #1192
• fix: Fix lin issues by @purnimavenkatasubbu in #1210
• feat: Replace encryption methods/key generation from EncryptionUtil with AtChops by @murali-shris in #1209
• chore: Changelog update by @purnimavenkatasubbu in #1211
• build(deps): bump actions/upload-artifact from 4.1.0 to 4.2.0 by @dependabot in #1214
• build(deps): bump actions/dependency-review-action from 3.1.5 to 4.0.0 by @dependabot in #1215

New Contributors

• @atsignbot made their first contribution in #1208

Full Changelog: v3.0.72...v3.0.73