Update certifi requirement from ~=2025.4.26 to ~=2025.6.15 (#174)

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements.txt

@@ -1,7 +1,7 @@
 alabaster~=1.0.0
 Babel~=2.17.0
 beautifulsoup4~=4.13.4
-certifi~=2025.4.26
+certifi~=2025.6.15
 chardet~=5.2.0
 css-html-js-minify~=2.5.5
 docutils~=0.21.2