chore(gemspec): require ffi >= 1.17.1

Contains a fix to restart async callback dispatcher thread after fork.

See: https://github.com/ffi/ffi/blob/v1.17.1/CHANGELOG.md#1171--2024-12-30

Author: maximerety

Gemfile.lock

@@ -3,7 +3,7 @@ PATH
   specs:
     tanker-core (0.0.0)
       faraday (>= 0.17.5, < 3.0.0)
-      ffi (~> 1.13)
+      ffi (>= 1.17.1, < 2.0)
 
 GEM
   remote: https://rubygems.org/
@@ -25,7 +25,8 @@ GEM
     faraday-net_http_persistent (2.3.0)
       faraday (~> 2.5)
       net-http-persistent (>= 4.0.4, < 5)
-    ffi (1.17.0)
+    ffi (1.17.1)
+    ffi (1.17.1-arm64-darwin)
     io-console (0.8.0)
     irb (1.14.3)
       rdoc (>= 4.0.0)

tanker-core.gemspec

@@ -33,5 +33,5 @@ Gem::Specification.new do |spec|
   spec.require_paths = ['lib']
 
   spec.add_dependency 'faraday', '>= 0.17.5', '< 3.0.0'
-  spec.add_dependency 'ffi', '~> 1.13'
+  spec.add_dependency 'ffi', '>= 1.17.1', '< 2.0'
 end