fix(ci): CodeQL matrix javascript-typescript -> actions (#29)

typell has no CodeQL-scannable source language (Idris/Rust/Zig), so the
`analyze (javascript-typescript)` job exited "no source files" and failed on
every run. Switched the matrix to `actions` (scans the GitHub Actions
workflows, present in every repo), matching the estate-canonical setup
(cf. kategoria, echo-types). Closes the recurring Hypatia
codeql_language_matrix_mismatch finding.


Claude-Session: https://claude.ai/code/session_019awZjBD1qx61tvmEuEKNpn

Co-authored-by: Claude <noreply@anthropic.com>

Author: hyperpolymath

.github/workflows/codeql.yml

@@ -30,7 +30,10 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - language: javascript-typescript
+          # CodeQL `actions` scans the GitHub Actions workflows (present in every
+          # repo). typell has no CodeQL-scannable source language, so the prior
+          # `javascript-typescript` entry exited "no source files" on every run.
+          - language: actions
             build-mode: none
 
     steps: