Support locking cache file when writing and handles syntax error when reading (#21469)

extensions/azurecore/yarn.lock

@@ -413,6 +413,11 @@
   resolved "https://registry.yarnpkg.com/@types/keytar/-/keytar-4.4.0.tgz#ca24e6ee6d0df10c003aafe26e93113b8faf0d8e"
   integrity sha512-cq/NkUUy6rpWD8n7PweNQQBpw2o0cf5v6fbkUVEpOB9VzzIvyPvSEId1/goIj+MciW2v1Lw5mRimKO01XgE9EA==
 
+"@types/lockfile@^1.0.2":
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/@types/lockfile/-/lockfile-1.0.2.tgz#3f77e84171a2b7e3198bd5717c7547a54393baf8"
+  integrity sha512-jD5VbvhfMhaYN4M3qPJuhMVUg3Dfc4tvPvLEAXn6GXbs/ajDFtCQahX37GIE65ipTI3I+hEvNaXS3MYAn9Ce3Q==
+
 "@types/mocha@^7.0.2":
   version "7.0.2"
   resolved "https://registry.yarnpkg.com/@types/mocha/-/mocha-7.0.2.tgz#b17f16cf933597e10d6d78eae3251e692ce8b0ce"
@@ -1334,6 +1339,13 @@ locate-path@^3.0.0:
     p-locate "^3.0.0"
     path-exists "^3.0.0"
 
+lockfile@1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/lockfile/-/lockfile-1.0.4.tgz#07f819d25ae48f87e538e6578b6964a4981a5609"
+  integrity sha512-cvbTwETRfsFh4nHsL1eGWapU1XFi5Ot9E85sWAwia7Y7EgB7vfqcZhTKZ+l7hCGxSPoushMv5GKhT5PdLv03WA==
+  dependencies:
+    signal-exit "^3.0.2"
+
 lodash.get@^4.4.2:
   version "4.4.2"
   resolved "https://registry.yarnpkg.com/lodash.get/-/lodash.get-4.4.2.tgz#2d177f652fa31e939b4438d5341499dfa3825e99"
@@ -1774,6 +1786,11 @@ side-channel@^1.0.4:
     get-intrinsic "^1.0.2"
     object-inspect "^1.9.0"
 
+signal-exit@^3.0.2:
+  version "3.0.7"
+  resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.7.tgz#a9a1767f8af84155114eaabd73f99273c8f59ad9"
+  integrity sha512-wnD2ZE+l+SPC/uoS0vXeE9L1+0wuaMqKlfz9AMUo38JsyLSBWSFcHR1Rri62LZc12vLr1gb3jl7iwQhgwpAbGQ==
+
 sinon@^9.0.2:
   version "9.0.2"
   resolved "https://registry.yarnpkg.com/sinon/-/sinon-9.0.2.tgz#b9017e24633f4b1c98dfb6e784a5f0509f5fd85d"