Bump splinter from 0.17.0 to 0.18.0

Bumps [splinter](https://github.com/cobrateam/splinter) from 0.17.0 to 0.18.0.
- [Release notes](https://github.com/cobrateam/splinter/releases)
- [Changelog](https://github.com/cobrateam/splinter/blob/master/docs/news.rst)
- [Commits](https://github.com/cobrateam/splinter/compare/0.17.0...0.18.0)

---
updated-dependencies:
- dependency-name: splinter
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: Alexandre Flament <alex@al-f.net>

requirements-dev.txt

@@ -4,7 +4,7 @@ cov-core==1.15.0
 black==22.3.0
 pycodestyle==2.8.0
 pylint==2.14.2
-splinter==0.17.0
+splinter==0.18.0
 selenium==4.2.0
 twine==4.0.1
 Pallets-Sphinx-Themes==2.0.2

tests/robot/test_webapp.py

@@ -21,13 +21,13 @@ def test_404(browser):
 
 def test_about(browser):
     browser.visit(url)
-    browser.click_link_by_text('searxng')
+    browser.links.find_by_text('searxng').click()
     assert browser.is_text_present('Why use it?')
 
 
 def test_preferences(browser):
     browser.visit(url)
-    browser.click_link_by_href('/preferences')
+    browser.links.find_by_href('/preferences').click()
     assert browser.is_text_present('Preferences')
     assert browser.is_text_present('COOKIES')
 
@@ -36,7 +36,7 @@ def test_preferences(browser):
 
 def test_preferences_engine_select(browser):
     browser.visit(url)
-    browser.click_link_by_href('/preferences')
+    browser.links.find_by_href('/preferences').click()
 
     assert browser.is_element_present_by_xpath('//label[@for="tab-engines"]')
     browser.find_by_xpath('//label[@for="tab-engines"]').first.click()
@@ -49,7 +49,7 @@ def test_preferences_engine_select(browser):
     sleep(1)
 
     browser.visit(url)
-    browser.click_link_by_href('/preferences')
+    browser.links.find_by_href('/preferences').click()
     browser.find_by_xpath('//label[@for="tab-engines"]').first.click()
 
     assert browser.find_by_xpath('//input[@id="engine_general_dummy__general"]').first.checked
@@ -57,7 +57,7 @@ def test_preferences_engine_select(browser):
 
 def test_preferences_locale(browser):
     browser.visit(url)
-    browser.click_link_by_href('/preferences')
+    browser.links.find_by_href('/preferences').click()
 
     browser.find_by_xpath('//label[@for="tab-ui"]').first.click()
     browser.select('locale', 'fr')
@@ -67,7 +67,7 @@ def test_preferences_locale(browser):
     sleep(1)
 
     browser.visit(url)
-    browser.click_link_by_href('/preferences')
+    browser.links.find_by_href('/preferences').click()
     browser.is_text_present('Préférences')