fix: update csrf token cookie name

[aeneasr]

See https://github.com/ory-corp/cloud/issues/1252

Related issue(s)

Checklist

• I have read the contributing guidelines.
• I am following the
  contributing code guidelines.
• I have read the security policy.
• I confirm that this pull request does not address a security
  vulnerability. If this pull request addresses a security. vulnerability, I
  confirm that I got green light (please contact
  security@ory.sh) from the maintainers to push
  the changes.
• I have added tests that prove my fix is effective or that my feature
  works.
• I have added or changed the documentation.

Further Comments

[codecov]

Codecov Report

Merging #1601 (12e442b) into master (60d848d) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #1601   +/-   ##
=======================================
  Coverage   74.17%   74.17%           
=======================================
  Files         257      257           
  Lines       12557    12557           
=======================================
  Hits         9314     9314           
  Misses       2624     2624           
  Partials      619      619           

Impacted Files	Coverage Δ
x/nosurf.go	92.59% <100.00%> (ø)

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