Bump mako from 1.1.6 to 1.2.0 (#1684)

* Bump mako from 1.1.6 to 1.2.0

Bumps [mako](https://github.com/sqlalchemy/mako) from 1.1.6 to 1.2.0.
- [Release notes](https://github.com/sqlalchemy/mako/releases)
- [Changelog](https://github.com/sqlalchemy/mako/blob/main/CHANGES)
- [Commits](https://github.com/sqlalchemy/mako/commits)

---
updated-dependencies:
- dependency-name: mako
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

* Update mako==1.2.0

* Update MarkupSafe==2.1.1

* Add importlib-metadata==4.11.3

* Update requirements.txt

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: JonnyWong16 <9099342+JonnyWong16@users.noreply.github.com>

[skip ci]

lib/mako/testing/helpers.py

@@ -0,0 +1,67 @@
+import contextlib
+import pathlib
+from pathlib import Path
+import re
+import time
+from typing import Union
+from unittest import mock
+
+
+def flatten_result(result):
+    return re.sub(r"[\s\r\n]+", " ", result).strip()
+
+
+def result_lines(result):
+    return [
+        x.strip()
+        for x in re.split(r"\r?\n", re.sub(r" +", " ", result))
+        if x.strip() != ""
+    ]
+
+
+def make_path(
+    filespec: Union[Path, str],
+    make_absolute: bool = True,
+    check_exists: bool = False,
+) -> Path:
+    path = Path(filespec)
+    if make_absolute:
+        path = path.resolve(strict=check_exists)
+    if check_exists and (not path.exists()):
+        raise FileNotFoundError(f"No file or directory at {filespec}")
+    return path
+
+
+def _unlink_path(path, missing_ok=False):
+    # Replicate 3.8+ functionality in 3.7
+    cm = contextlib.nullcontext()
+    if missing_ok:
+        cm = contextlib.suppress(FileNotFoundError)
+
+    with cm:
+        path.unlink()
+
+
+def replace_file_with_dir(pathspec):
+    path = pathlib.Path(pathspec)
+    _unlink_path(path, missing_ok=True)
+    path.mkdir(exist_ok=True)
+    return path
+
+
+def file_with_template_code(filespec):
+    with open(filespec, "w") as f:
+        f.write(
+            """
+i am an artificial template just for you
+"""
+        )
+    return filespec
+
+
+@contextlib.contextmanager
+def rewind_compile_time(hours=1):
+    rewound = time.time() - (hours * 3_600)
+    with mock.patch("mako.codegen.time") as codegen_time:
+        codegen_time.time.return_value = rewound
+        yield