Bump github.com/bwmarrin/discordgo from 0.27.1 to 0.28.1

Bumps [github.com/bwmarrin/discordgo](https://github.com/bwmarrin/discordgo) from 0.27.1 to 0.28.1.
- [Release notes](https://github.com/bwmarrin/discordgo/releases)
- [Commits](bwmarrin/discordgo@v0.27.1...v0.28.1)

---
updated-dependencies:
- dependency-name: github.com/bwmarrin/discordgo
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -3,7 +3,7 @@ module github.com/pajbot/pajbot2-discord
 go 1.19
 
 require (
-	github.com/bwmarrin/discordgo v0.27.1
+	github.com/bwmarrin/discordgo v0.28.1
 	github.com/dghubble/go-twitter v0.0.0-20221104224141-912508c3888b
 	github.com/dghubble/oauth1 v0.7.3
 	github.com/jessevdk/go-flags v1.5.0

go.sum

@@ -1,7 +1,7 @@
 github.com/BurntSushi/toml v1.3.2 h1:o7IhLm0Msx3BaB+n3Ag7L8EVlByGnpq14C4YWiu/gL8=
 github.com/BurntSushi/toml v1.3.2/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
-github.com/bwmarrin/discordgo v0.27.1 h1:ib9AIc/dom1E/fSIulrBwnez0CToJE113ZGt4HoliGY=
-github.com/bwmarrin/discordgo v0.27.1/go.mod h1:NJZpH+1AfhIcyQsPeuBKsUtYrRnjkyu0kIVMCHkZtRY=
+github.com/bwmarrin/discordgo v0.28.1 h1:gXsuo2GBO7NbR6uqmrrBDplPUx2T3nzu775q/Rd1aG4=
+github.com/bwmarrin/discordgo v0.28.1/go.mod h1:NJZpH+1AfhIcyQsPeuBKsUtYrRnjkyu0kIVMCHkZtRY=
 github.com/cenkalti/backoff/v4 v4.2.0 h1:HN5dHm3WBOgndBH6E8V0q2jIYIR3s9yglV8k/+MN3u4=
 github.com/cenkalti/backoff/v4 v4.2.0/go.mod h1:Y3VNntkOUPxTVeUxJ/G5vcM//AlwfmyYozVcomhLiZE=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=