bump deps and add vendor dir (#269)

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## What type of PR is this? (check all applicable)

- [ ] Refactor
- [ ] Feature
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- [ ] Optimization
- [ ] Documentation Update
- [ ] Go Version Update
- [x] Dependency Update

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## Added/updated tests?

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Author: coreydaley

go.mod

@@ -2,4 +2,4 @@ module github.com/gorilla/sessions
 
 go 1.20
 
-require github.com/gorilla/securecookie v1.1.1
+require github.com/gorilla/securecookie v1.1.2

go.sum

@@ -1,2 +1,3 @@
-github.com/gorilla/securecookie v1.1.1 h1:miw7JPhV+b/lAHSXz4qd/nN9jRiAFV5FwjeKyCS8BvQ=
-github.com/gorilla/securecookie v1.1.1/go.mod h1:ra0sb63/xPlUeL+yeDciTfxMRAA+MP+HVt/4epWDjd4=
+github.com/google/gofuzz v1.2.0 h1:xRy4A+RhZaiKjJ1bPfwQ8sedCA+YS2YcCHW6ec7JMi0=
+github.com/gorilla/securecookie v1.1.2 h1:YCIWL56dvtr73r6715mJs5ZvhtnY73hBvEF8kXD8ePA=
+github.com/gorilla/securecookie v1.1.2/go.mod h1:NfCASbcHqRSY+3a8tlWJwsQap2VX5pwzwo4h3eOamfo=