jwt: errors from http client is not wrapped in error

[jkralik]

Pls replace %v by %w in fmt.Errorf for wrapping errors.
eg:

oauth2/internal/token.go

Line 237 in 2fc4ef5

return nil, fmt.Errorf("oauth2: cannot fetch token: %v", err)

oauth2/jwt/jwt.go

Line 136 in 2fc4ef5

return nil, fmt.Errorf("oauth2: cannot fetch token: %v", err)

oauth2/jwt/jwt.go

Line 141 in 2fc4ef5

return nil, fmt.Errorf("oauth2: cannot fetch token: %v", err)

oauth2/jwt/jwt.go

Line 157 in 2fc4ef5

return nil, fmt.Errorf("oauth2: cannot fetch token: %v", err)

oauth2/jwt/jwt.go

Line 174 in 2fc4ef5

return nil, fmt.Errorf("oauth2: error decoding JWT token: %v", err)

...

[1garo]

opened a PR to solve this! @jkralik