fix(ci): reconcile actions.lock so the lockfile validates (#763)

Workflows fail at creation with `The lockfile could not be validated.
Regenerate it by running gh actions-lock` / `Workflow must use a
lockfile`. This regenerates the manifest with the official extension
(`github/gh-actions-lock`), completes the `workflows:` map so every
workflow file has an entry, and pins the SHA-form transitive deps
reached via called reusables. Proof before push: every workflow
re-parses, `gh actions-lock --verify` rc=0, and every `uses:` ref
resolves to a pin.

Co-authored-by: Arena Agent <agent@arena.ai>

Author: hyperpolymath

.github/workflows/actions.lock

@@ -152,3 +152,38 @@ dependencies:
         commit: 'sha1-28959ce8df70de7be546dd1250a005dd32156697'
         owner_id: 18365890
         repo_id: 220359305
+    'actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9':
+        ref: 'v6.1.0'
+        commit: 'sha1-55cc8345863c7cc4c66a329aec7e433d2d1c52a9'
+        owner_id: 44036562
+        repo_id: 215566462
+    'actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1':
+        ref: 'v7.0.1'
+        commit: 'sha1-3d3c42e5aac5ba805825da76410c181273ba90b1'
+        owner_id: 44036562
+        repo_id: 197814629
+    'actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a':
+        ref: 'v7.0.1'
+        commit: 'sha1-043fb46d1a93c77aae656e7c1c64a875d1fc6a0a'
+        owner_id: 44036562
+        repo_id: 192625955
+    'dtolnay/rust-toolchain@6c977a6ca4077a0ceb28ffbe03f59d46e9ac8772':
+        ref: 'stable'
+        commit: 'sha1-6c977a6ca4077a0ceb28ffbe03f59d46e9ac8772'
+        owner_id: 1940490
+        repo_id: 260749683
+    'erlef/setup-beam@54075bcc5e249e4758d363f27d099f55d843f124':
+        ref: 'v1.24.1'
+        commit: 'sha1-54075bcc5e249e4758d363f27d099f55d843f124'
+        owner_id: 47606891
+        repo_id: 331103973
+    'ossf/scorecard-action@2d1146689b8cda280b9bc96326124645441f03bc':
+        ref: 'v2.4.4'
+        commit: 'sha1-2d1146689b8cda280b9bc96326124645441f03bc'
+        owner_id: 67707773
+        repo_id: 421101922
+    'webfactory/ssh-agent@e83874834305fe9a4a2997156cb26c5de65a8555':
+        ref: 'v0.10.0'
+        commit: 'sha1-e83874834305fe9a4a2997156cb26c5de65a8555'
+        owner_id: 135788
+        repo_id: 208510314