Bump the llvm-docs-requirements group in /llvm/docs with 4 updates

Bumps the llvm-docs-requirements group in /llvm/docs with 4 updates: [beautifulsoup4](https://www.crummy.com/software/BeautifulSoup/bs4/), [certifi](https://github.com/certifi/python-certifi), [idna](https://github.com/kjd/idna) and [snowballstemmer](https://github.com/snowballstem/snowball).


Updates `beautifulsoup4` from 4.14.3 to 4.15.0

Updates `certifi` from 2026.5.20 to 2026.6.17
- [Commits](certifi/python-certifi@2026.05.20...2026.06.17)

Updates `idna` from 3.17 to 3.18
- [Release notes](https://github.com/kjd/idna/releases)
- [Changelog](https://github.com/kjd/idna/blob/master/HISTORY.md)
- [Commits](kjd/idna@v3.17...v3.18)

Updates `snowballstemmer` from 3.1.0 to 3.1.1
- [Changelog](https://github.com/snowballstem/snowball/blob/main/NEWS)
- [Commits](snowballstem/snowball@v3.1.0...v3.1.1)

---
updated-dependencies:
- dependency-name: beautifulsoup4
  dependency-version: 4.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: llvm-docs-requirements
- dependency-name: certifi
  dependency-version: 2026.6.17
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: llvm-docs-requirements
- dependency-name: idna
  dependency-version: '3.18'
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: llvm-docs-requirements
- dependency-name: snowballstemmer
  dependency-version: 3.1.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: llvm-docs-requirements
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

llvm/docs/requirements-hashed.txt

@@ -12,13 +12,13 @@ babel==2.18.0 \
     --hash=sha256:b80b99a14bd085fcacfa15c9165f651fbb3406e66cc603abf11c5750937c992d \
     --hash=sha256:e2b422b277c2b9a9630c1d7903c2a00d0830c409c59ac8cae9081c92f1aeba35
     # via sphinx
-beautifulsoup4==4.14.3 \
-    --hash=sha256:0918bfe44902e6ad8d57732ba310582e98da931428d231a5ecb9e7c703a735bb \
-    --hash=sha256:6292b1c5186d356bba669ef9f7f051757099565ad9ada5dd630bd9de5fa7fb86
+beautifulsoup4==4.15.0 \
+    --hash=sha256:288e3ca7d54b06f2ac191970bc275c1939cb46d450b255bf6718b04aa37ab4f7 \
+    --hash=sha256:d6f88de62e1d4e38ecb1077eb9724cd0eff29d2a08ca16a401e9b9e93f117cf9
     # via furo
-certifi==2026.5.20 \
-    --hash=sha256:3c52e209ba0a4ad7aebe60436a4ab349c39e1e602e8c134221e546902ad25897 \
-    --hash=sha256:69dea482ab64caa7b9f6aba1c6bf48bb6a5448d1c0f1b17ab42ad8c763a5344d
+certifi==2026.6.17 \
+    --hash=sha256:024c88eeec92ca068db80f02b8b07c9cef7b9fe261d1d535abfd5abd6f6af432 \
+    --hash=sha256:2227dcbaafe0d2f59279d1762ddddc37783ed4354594f194ffc31d20f41fc3db
     # via requests
 charset-normalizer==3.4.7 \
     --hash=sha256:007d05ec7321d12a40227aae9e2bc6dca73f3cb21058999a1df9e193555a9dcc \
@@ -167,9 +167,9 @@ furo==2025.12.19 \
     --hash=sha256:188d1f942037d8b37cd3985b955839fea62baa1730087dc29d157677c857e2a7 \
     --hash=sha256:bb0ead5309f9500130665a26bee87693c41ce4dbdff864dbfb6b0dae4673d24f
     # via -r requirements.txt
-idna==3.17 \
-    --hash=sha256:466e48829084efe2548012b855df21540b96f2e20e51bd124c851536556a592c \
-    --hash=sha256:5eb0cb53bc467c12eadcf6de83163ad8527cec9416f44b9b61b19caedad2b87f
+idna==3.18 \
+    --hash=sha256:7f952cbe720b688055e3f87de14f5c3e5fdaa8bc3928985c4077ca689de849a2 \
+    --hash=sha256:ffb385a7e039654cef1ab9ef32c6fafe283c0c0467bba1d9029738ce4a14a848
     # via requests
 imagesize==2.0.0 \
     --hash=sha256:5667c5bbb57ab3f1fa4bc366f4fbc971db3d5ed011fd2715fd8001f782718d96 \
@@ -387,9 +387,9 @@ requests==2.34.2 \
     --hash=sha256:2a0d60c172f83ac6ab31e4554906c0f3b3588d37b5cb939b1c061f4907e278e0 \
     --hash=sha256:f288924cae4e29463698d6d60bc6a4da69c89185ad1e0bcc4104f584e960b9ed
     # via sphinx
-snowballstemmer==3.1.0 \
-    --hash=sha256:17e6d1da216aa07db6dad37139ea70cf13c4b2e9a096f6e64a9648fc657d3154 \
-    --hash=sha256:fd9e34526b23340cd23ffea6c9f9760974ecc2c2ac9e1d81401443ccdb2a801f
+snowballstemmer==3.1.1 \
+    --hash=sha256:7e207fa178741da09cdee59d3ecec3827ad5f92b1fc5c9ff3755b639f71f5752 \
+    --hash=sha256:e07bbc54a0d798fe6010a12398422e62a8bfbba95c394fd0956ef58cb4d3e260
     # via sphinx
 soupsieve==2.8.4 \
     --hash=sha256:e121fd02e975c695e4e9e8774a5ee35d74714b59307868dcc5319ad2d9e3328e \