Update line-bot-sdk-go to v7.21.0

Author: kkdai

go.mod

@@ -3,4 +3,4 @@ module github.com/kkdai/LineBotTemplate
 // +heroku goVersion go1.21
 go 1.21
 
-require github.com/line/line-bot-sdk-go/v7 v7.19.0
+require github.com/line/line-bot-sdk-go/v7 v7.21.0

go.sum

@@ -1,12 +1,2 @@
-github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/line/line-bot-sdk-go/v7 v7.18.0 h1:ogrOioYKnCuyDlbNAuFb7hGdv1KGkluKWUcZx/Uocds=
-github.com/line/line-bot-sdk-go/v7 v7.18.0/go.mod h1:2CXH5xBgADszymGNRRUiUqBQ/0G6r2nx3BviBYtnB3U=
-github.com/line/line-bot-sdk-go/v7 v7.19.0 h1:WEbuBBSq65RMMqTn3vIl+Eb4wv2CjhZz7kiw8XTk2Wg=
-github.com/line/line-bot-sdk-go/v7 v7.19.0/go.mod h1:idpoxOZgtSd8JyhctMMpwg5LNgRAIL/QIxa5S0DXcMg=
-golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/net v0.0.0-20190603091049-60506f45cf65/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
-golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
-golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-google.golang.org/appengine v1.6.7/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
+github.com/line/line-bot-sdk-go/v7 v7.21.0 h1:eeYMuAwaDV5DZNTRqDipNhzjT51HwEcM1PRPG+cqh4Y=
+github.com/line/line-bot-sdk-go/v7 v7.21.0/go.mod h1:idpoxOZgtSd8JyhctMMpwg5LNgRAIL/QIxa5S0DXcMg=