typos.toml: exclude more from typo checks

- exclude visual studio project templates
- exclude test cases
- allow 'proxys' which is used for "secure proxy" in test code
- allow Tru64 and secur32

Closes #18789

.github/scripts/typos.toml

@@ -12,6 +12,10 @@ extend-ignore-identifiers-re = [
   "^[0-9a-zA-Z+]{64,}$",  # possibly base64
   "^(Januar|eyeballers|HELO_smtp|kno22|MkTypLibCompatible|optin|passin|perfec|__SecURE|SMTP_HELO|v_alue)$",
   "^(clen|req_clen|smtp_perform_helo|smtp_state_helo_resp|_stati64)$",
+  "^Tru64$",
+  "secur32",
+  # this should be limited to tests/http/*. Short for secure proxy.
+  "proxys",
 ]
 
 extend-ignore-re = [
@@ -25,4 +29,7 @@ extend-exclude = [
   "docs/THANKS",
   "packages/*",
   "scripts/wcurl",
+  "projects/Windows/tmpl/curl.vcxproj",
+  "projects/Windows/tmpl/libcurl.vcxproj",
+  "tests/data/test*",
 ]