chore: update dependencies and configuration

- Bump version of dependencies in package.json:
  - Updated "ai" from "^6.0.86" to "^6.0.91"
  - Updated "motion" from "^12.34.0" to "^12.34.2"
  - Updated "@ai-sdk/google-vertex" from "^4.0.58" to "^4.0.59"
  - Updated "@ai-sdk/openai" from "^3.0.29" to "^3.0.30"
  - Updated "@ai-sdk/react" from "^3.0.88" to "^3.0.93"
  - Updated "@mastra/ai-sdk" from "^1.0.4" to "^1.0.5"
  - Updated "@mastra/client-js" from "^1.4.0" to "^1.5.0"
  - Updated "@mastra/core" from "^1.4.0" to "^1.5.0"
  - Updated "@mastra/deployer" from "^1.4.0" to "^1.5.0"
  - Updated "@mastra/evals" from "^1.1.1" to "^1.1.2"
  - Updated "@mastra/libsql" from "^1.4.0" to "^1.5.0"
  - Updated "@mastra/loggers" from "^1.0.1" to "^1.0.2"
  - Updated "@mastra/memory" from "^1.3.0" to "^1.4.0"
  - Updated "@mastra/mongodb" from "^1.3.1" to "^1.4.0"
  - Updated "@mastra/pg" from "^1.4.0" to "^1.5.0"
  - Updated "@mastra/react" from "^0.2.3" to "^0.2.4"
  - Updated "@mastra/voice-openai" from "^0.12.0" to "^0.12.1"
  - Updated "@octokit/plugin-retry" from "^8.0.3" to "^8.1.0"
  - Updated "convex" from "^1.31.7" to "^1.32.0"
  - Updated "framer-motion" from "^12.34.0" to "^12.34.2"
  - Updated "marked" from "^17.0.2" to "^17.0.3"
  - Updated "tailwind-merge" from "^3.4.1" to "^3.5.0"
  - Updated "@tailwindcss/postcss" from "^4.1.18" to "^4.2.0"
  - Updated "mastra" from "^1.3.1" to "^1.3.2"
  - Updated "tailwindcss" from "^4.1.18" to "^4.2.0"

- Update version in package.json from "1.2.0" to "1.2.1"
- Adjust baseUrl in tsconfig.json from "./" to "."

Author: ssdeanx