fix(deps): update module code.gitea.io/sdk/gitea to v0.21.0 (#102)

Reviewed-on: https://gitea.com/gitea/terraform-provider-gitea/pulls/102
Co-authored-by: Renovate Bot <renovate-bot@gitea.com>
Co-committed-by: Renovate Bot <renovate-bot@gitea.com>

Author: Renovate Bot

go.mod

@@ -1,18 +1,18 @@
 module code.gitea.io/terraform-provider-gitea
 
-go 1.22.7
+go 1.23
 
 toolchain go1.24.3
 
 require (
-	code.gitea.io/sdk/gitea v0.20.0
+	code.gitea.io/sdk/gitea v0.21.0
 	github.com/hashicorp/terraform-plugin-docs v0.20.1
 	github.com/hashicorp/terraform-plugin-log v0.9.0
 	github.com/hashicorp/terraform-plugin-sdk/v2 v2.36.1
 )
 
 require (
-	github.com/42wim/httpsig v1.2.1 // indirect
+	github.com/42wim/httpsig v1.2.2 // indirect
 	github.com/BurntSushi/toml v1.2.1 // indirect
 	github.com/Kunde21/markdownfmt/v3 v3.1.0 // indirect
 	github.com/Masterminds/goutils v1.1.1 // indirect

go.sum

@@ -1,9 +1,13 @@
 code.gitea.io/sdk/gitea v0.20.0 h1:Zm/QDwwZK1awoM4AxdjeAQbxolzx2rIP8dDfmKu+KoU=
 code.gitea.io/sdk/gitea v0.20.0/go.mod h1:faouBHC/zyx5wLgjmRKR62ydyvMzwWf3QnU0bH7Cw6U=
+code.gitea.io/sdk/gitea v0.21.0 h1:69n6oz6kEVHRo1+APQQyizkhrZrLsTLXey9142pfkD4=
+code.gitea.io/sdk/gitea v0.21.0/go.mod h1:tnBjVhuKJCn8ibdyyhvUyxrR1Ca2KHEoTWoukNhXQPA=
 dario.cat/mergo v1.0.0 h1:AGCNq9Evsj31mOgNPcLyXc+4PNABt905YmuqPYYpBWk=
 dario.cat/mergo v1.0.0/go.mod h1:uNxQE+84aUszobStD9th8a29P2fMDhsBdgRYvZOxGmk=
 github.com/42wim/httpsig v1.2.1 h1:oLBxptMe9U4ZmSGtkosT8Dlfg31P3VQnAGq6psXv82Y=
 github.com/42wim/httpsig v1.2.1/go.mod h1:P/UYo7ytNBFwc+dg35IubuAUIs8zj5zzFIgUCEl55WY=
+github.com/42wim/httpsig v1.2.2 h1:ofAYoHUNs/MJOLqQ8hIxeyz2QxOz8qdSVvp3PX/oPgA=
+github.com/42wim/httpsig v1.2.2/go.mod h1:P/UYo7ytNBFwc+dg35IubuAUIs8zj5zzFIgUCEl55WY=
 github.com/BurntSushi/toml v1.2.1 h1:9F2/+DoOYIOksmaJFPw1tGFy1eDnIJXg+UHjuD8lTak=
 github.com/BurntSushi/toml v1.2.1/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
 github.com/Kunde21/markdownfmt/v3 v3.1.0 h1:KiZu9LKs+wFFBQKhrZJrFZwtLnCCWJahL+S+E/3VnM0=