Importing bandit messes up console output on Windows.
**Describe the bug**
Importing bandit module changes the formatting on Windows console. This is because in one of the files, Colorama is imported and initialized without being deinitialized.

**To Reproduce**
0. Use Windows
1. Install bandit
2. Install colorama
3. print `'\\033[4mHello, World!\\033[0m'` before and after importing `bandit`.

**Expected behavior**
One should not be forced to use `Colorama` just because they imported `bandit`.

**Suggested solution**
After the bandit outputting is done, call  :
```python
colorama.deinit()
```

**Bandit version**
Since https://github.com/PyCQA/bandit/pull/424, _i.e_ since 1.6.0.

diff --git a/bandit/formatters/screen.py b/bandit/formatters/screen.py
index b35d8cb..1641f1a 100644
--- a/bandit/formatters/screen.py
+++ b/bandit/formatters/screen.py
@@ -38,16 +38,20 @@ from bandit.core import constants
 from bandit.core import docs_utils
 from bandit.core import test_properties
 
+IS_WIN_PLATFORM = sys.platform.startswith('win32')
+COLORAMA = False
+
 # This fixes terminal colors not displaying properly on Windows systems.
 # Colorama will intercept any ANSI escape codes and convert them to the
 # proper Windows console API calls to change text color.
-if sys.platform.startswith('win32'):
+if IS_WIN_PLATFORM:
     try:
         import colorama
     except ImportError:
         pass
     else:
-        colorama.init()
+        COLORAMA = True
+
 
 LOG = logging.getLogger(__name__)
 
@@ -161,6 +165,9 @@ def report(manager, fileobj, sev_level, conf_level, lines=-1):
     :param lines: Number of lines to report, -1 for all
     """
 
+    if IS_WIN_PLATFORM and COLORAMA:
+        colorama.init()
+
     bits = []
     if not manager.quiet or manager.results_count(sev_level, conf_level):
         bits.append(header("Run started:%s", datetime.datetime.utcnow()))
@@ -186,3 +193,6 @@ def report(manager, fileobj, sev_level, conf_level, lines=-1):
     if fileobj.name != sys.stdout.name:
         LOG.info("Screen formatter output was not written to file: %s, "
                  "consider '-f txt'", fileobj.name)
+
+    if IS_WIN_PLATFORM and COLORAMA:
+        colorama.deinit()
['bandit/formatters/screen.py']