🔭 [Keyword Plugin] Add more to FALSE_POSITIVES

- `>` for Ruby e.g. `:some_password => params[some_thing]`
- `"dummy`, `'dummy` `dummy_value` for e.g. `"dummy value"`
- `::` (from an internal test case)
- `null.*'` and `null.*"` (from an internal test case)

Author: KevinHock

Diff for: detect_secrets/plugins/keyword.py

@@ -51,26 +51,31 @@
     '""):',
     '"\'',
     '")',
+    '"dummy',
     '#pass',
     '#password',
     '$(shell',
     "'\"",
     "''",
     "''):",
     "')",
+    "'dummy",
     "'this",
     '(nsstring',
     '-default}',
+    '::',
     '<a',
     '<aws_secret_access_key>',
     '<input',
     '<password>',
+    '>',
     '=',
     '\\"$(shell',
     '\\k.*"',
     "\\k.*'",
     '`grep',
     'dummy_secret',
+    'dummy_value',
     'false',
     'false):',
     'false,',
@@ -81,6 +86,8 @@
     'not',
     'null',
     'null,',
+    'null.*"',
+    "null.*'",
     'null;',
     'password',
     'password)',