chore(npm): update package versions/license

These fields were not updated accidentally on the v2.6.0 release.

Change-Id: I215105da618ff6f72057eaa40a34ff4b24f7ee36
Signed-off-by: Chris Kay <chris.kay@arm.com>
diff --git a/package-lock.json b/package-lock.json
index 1d95ac9..4db80d4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "trusted-firmware-a",
-  "version": "2.5.0",
+  "version": "2.6.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "trusted-firmware-a",
-      "version": "2.5.0",
+      "version": "2.6.0",
       "hasInstallScript": true,
       "license": "BSD-3-Clause",
       "devDependencies": {
@@ -3820,8 +3820,9 @@
       }
     },
     "tools/conventional-changelog-tf-a": {
-      "version": "1.0.0",
+      "version": "2.6.0",
       "dev": true,
+      "license": "BSD-3-Clause",
       "dependencies": {
         "conventional-changelog-conventionalcommits": "^4.6.1",
         "execa": "^5.1.1",