Upgrade terraform-provider-gitlab to v3.9.1

[jkodroff]

Fixes #144
Fixes #143

[github-actions]

Does the PR have any schema changes?

Found 11 breaking changes:
Function "gitlab:index/getProject:getProject" output "pushRules" type changed from "" to "array"
Function "gitlab:index/getProject:getProject" output "pushRules" type changed from "#/types/gitlab:index/getProjectPushRules:getProjectPushRules" to ""
had &{Type: Ref:#/types/gitlab:index/getProjectPushRule:getProjectPushRule AdditionalProperties: Items: OneOf:[]} but now has no type
Type "gitlab:index/getProjectsProject:getProjectsProject" missing property "forkedFromProject"
Type "gitlab:index/getProjectsProject:getProjectsProject" input "permissions" type changed from "" to "array"
Type "gitlab:index/getProjectsProject:getProjectsProject" input "permissions" type changed from "#/types/gitlab:index/getProjectsProjectPermissions:getProjectsProjectPermissions" to ""
had &{Type: Ref:#/types/gitlab:index/getProjectsProjectPermission:getProjectsProjectPermission AdditionalProperties: Items: OneOf:[]} but now has no type
Type "gitlab:index/getProjectsProject:getProjectsProject" missing property "namespace"
Type "gitlab:index/getProjectsProject:getProjectsProject" missing property "owner"
Type "gitlab:index/getProjectsProjectPermissions:getProjectsProjectPermissions" missing
Type "gitlab:index/getProjectPushRules:getProjectPushRules" missing

New resources:

• gitlab:index/groupBadge:GroupBadge
• gitlab:index/groupCustomAttribute:GroupCustomAttribute
• gitlab:index/managedLicense:ManagedLicense
• gitlab:index/projectAccessToken:ProjectAccessToken
• gitlab:index/projectCustomAttribute:ProjectCustomAttribute
• gitlab:index/repositoryFile:RepositoryFile
• gitlab:index/serviceMicrosoftTeams:ServiceMicrosoftTeams
• gitlab:index/userCustomAttribute:UserCustomAttribute

New functions:

• gitlab:index/getProjectProtectedBranch:getProjectProtectedBranch
• gitlab:index/getProjectProtectedBranches:getProjectProtectedBranches

[jkodroff]

@stack72 Part of this PR was to update to V2. Could you give me some tips on resolving the breaking changes?

[github-actions]

Does the PR have any schema changes?

Looking good! No breaking changes found.

New resources:

• gitlab:index/groupBadge:GroupBadge
• gitlab:index/groupCustomAttribute:GroupCustomAttribute
• gitlab:index/managedLicense:ManagedLicense
• gitlab:index/projectAccessToken:ProjectAccessToken
• gitlab:index/projectCustomAttribute:ProjectCustomAttribute
• gitlab:index/repositoryFile:RepositoryFile
• gitlab:index/serviceMicrosoftTeams:ServiceMicrosoftTeams
• gitlab:index/userCustomAttribute:UserCustomAttribute

New functions:

• gitlab:index/getProjectProtectedBranch:getProjectProtectedBranch
• gitlab:index/getProjectProtectedBranches:getProjectProtectedBranches