feat: update email templates

Add SPM email attachment

package-lock.json

@@ -19809,6 +19809,7 @@
         "@aws-sdk/signature-v4-crt": "^3.410.0",
         "@documenso/email": "*",
         "@documenso/prisma": "*",
+        "@documenso/signing": "*",
         "@next-auth/prisma-adapter": "1.0.7",
         "@pdf-lib/fontkit": "^1.1.1",
         "@scure/base": "^1.1.3",
@@ -19862,17 +19863,23 @@
     "packages/signing": {
       "name": "@documenso/signing",
       "version": "1.0.0",
-      "license": "MIT",
+      "license": "AGPLv3",
       "dependencies": {
         "@documenso/tsconfig": "*",
         "node-forge": "^1.3.1",
         "node-signpdf": "^2.0.0",
-        "pdf-lib": "^1.17.1"
+        "pdf-lib": "^1.17.1",
+        "ts-pattern": "^5.0.5"
       },
       "devDependencies": {
         "@types/node-forge": "^1.3.4"
       }
     },
+    "packages/signing/node_modules/ts-pattern": {
+      "version": "5.0.5",
+      "resolved": "https://registry.npmjs.org/ts-pattern/-/ts-pattern-5.0.5.tgz",
+      "integrity": "sha512-tL0w8U/pgaacOmkb9fRlYzWEUDCfVjjv9dD4wHTgZ61MjhuMt46VNWTG747NqW6vRzoWIKABVhFSOJ82FvXrfA=="
+    },
     "packages/tailwind-config": {
       "name": "@documenso/tailwind-config",
       "version": "0.0.0",