build(deps): bump meson from 1.6.1 to 1.8.1 in /.github/workflows

Bumps [meson](https://github.com/mesonbuild/meson) from 1.6.1 to 1.8.1.
- [Release notes](https://github.com/mesonbuild/meson/releases)
- [Commits](https://github.com/mesonbuild/meson/compare/1.6.1...1.8.1)

---
updated-dependencies:
- dependency-name: meson
  dependency-version: 1.8.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/requirements.txt

@@ -1,6 +1,6 @@
-meson==1.6.1 \
-    --hash=sha256:1eca49eb6c26d58bbee67fd3337d8ef557c0804e30a6d16bfdf269db997464de \
-    --hash=sha256:3f41f6b03df56bb76836cc33c94e1a404c3584d48b3259540794a60a21fad1f9
+meson==1.8.1 \
+    --hash=sha256:374bbf71247e629475fc10b0bd2ef66fc418c2d8f4890572f74de0f97d0d42da \
+    --hash=sha256:b4e3b80e8fa633555abf447a95a700aba1585419467b2710d5e5bf88df0a7011
 ninja==1.11.1.4 \
     --hash=sha256:055f386fb550c2c9d6157e45e20a84d29c47968876b9c5794ae2aec46f952306 \
     --hash=sha256:096487995473320de7f65d622c3f1d16c3ad174797602218ca8c967f51ec38a0 \