chore(deps): bump imap-tools and python-gnupg

- imap-tools 1.15.0 -> 1.16.0 (1.15.1 fixes a ReDoS in the MailMessage.html parser; 1.16.0 fixes silent no-op mailbox actions with iterables and mixed ASCII/encoded-word address decoding)
- python-gnupg 0.5.6 -> 0.5.7

pyproject.toml

@@ -47,7 +47,7 @@ dependencies = [
   "gotenberg-client[httpx]~=1.0",
   "httpx-oauth~=0.17",
   "ijson>=3.5.1",
-  "imap-tools>=1.14,<1.16",
+  "imap-tools>=1.16,<1.17",
   "jinja2~=3.1.6",
   "langdetect~=1.0.9",
   "llama-index-core>=0.14.23",
@@ -62,7 +62,7 @@ dependencies = [
   "pdf2image~=1.17.0",
   "python-dateutil~=2.9.0",
   "python-dotenv~=1.2.1",
-  "python-gnupg~=0.5.4",
+  "python-gnupg~=0.5.7",
   "python-ipware~=3.0.0",
   "python-magic~=0.4.27",
   "rapidfuzz~=3.14.5",