feat(icons): add pangolin (#1252)

Co-authored-by: Dashboard Icons Manager <193821040+dashboard-icons-manager[bot]@users.noreply.github.com>

tree.json

@@ -1417,6 +1417,7 @@
         "pairdrop.png",
         "palemoon.png",
         "palo-alto.png",
+        "pangolin.png",
         "paperless-ng.png",
         "paperless-ngx.png",
         "paperless.png",
@@ -3391,6 +3392,7 @@
         "pagerduty.svg",
         "palemoon.svg",
         "palo-alto.svg",
+        "pangolin.svg",
         "paperless-ng.svg",
         "paperless-ngx.svg",
         "paperless.svg",
@@ -5441,6 +5443,7 @@
         "pairdrop.webp",
         "palemoon.webp",
         "palo-alto.webp",
+        "pangolin.webp",
         "paperless-ng.webp",
         "paperless-ngx.webp",
         "paperless.webp",