Bump @actions/core from 1.1.3 to 1.2.6 (#361)

Bumps [@actions/core](https://github.com/actions/toolkit/tree/HEAD/packages/core) from 1.1.3 to 1.2.6.
- [Release notes](https://github.com/actions/toolkit/releases)
- [Changelog](https://github.com/actions/toolkit/blob/main/packages/core/RELEASES.md)
- [Commits](https://github.com/actions/toolkit/commits/HEAD/packages/core)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package-lock.json

@@ -5,9 +5,9 @@
   "requires": true,
   "dependencies": {
     "@actions/core": {
-      "version": "1.1.3",
-      "resolved": "https://registry.npmjs.org/@actions/core/-/core-1.1.3.tgz",
-      "integrity": "sha512-2BIib53Jh4Cfm+1XNuZYYGTeRo8yiWEAUMoliMh1qQGMaqTF4VUlhhcsBylTu4qWmUx45DrY0y0XskimAHSqhw=="
+      "version": "1.2.6",
+      "resolved": "https://registry.npmjs.org/@actions/core/-/core-1.2.6.tgz",
+      "integrity": "sha512-ZQYitnqiyBc3D+k7LsgSBmMDVkOVidaagDG7j3fOym77jNunWRuYx7VSHa9GNfFZh+zh61xsCjRj4JxMZlDqTA=="
     },
     "@actions/exec": {
       "version": "1.0.1",

package.json

@@ -26,7 +26,7 @@
   },
   "homepage": "https://github.com/actions/checkout#readme",
   "dependencies": {
-    "@actions/core": "^1.1.3",
+    "@actions/core": "^1.2.6",
     "@actions/exec": "^1.0.1",
     "@actions/github": "^2.2.0",
     "@actions/io": "^1.0.1",