fix(dev): Install Python 3.6.x with --patch on Big Sur

Fixes regression introduced in #29058.

On Big Sur, we cannot install Python 3.6.x without patching the source code first.

scripts/pyenv_setup.sh

@@ -94,13 +94,15 @@ install_pyenv() {
       exit 1
     fi
 
-    if query-apple-m1; then
-      pyenv install --skip-existing "${PYENV_VERSION}"
-    elif query-big-sur && [ "${PYENV_VERSION}" = 3.6.10 ]; then
-      # TODO(joshuarli): Can be removed when 3.6 is removed.
-      curl -sSL https://github.com/python/cpython/commit/8ea6353.patch | \
-      cat | \
-      pyenv install --skip-existing --patch "${PYENV_VERSION}"
+    # I'm assuming that SENTRY_PYTHON_VERSION won't be used to specify a 3.6 version to simplify the condition
+    # When a user sets a SENTRY_PYTHON_VERSION they intend to use a non-default version that I assume
+    # is newer, thus, can install with the non-source-patched default pyenv install command
+    if query-big-sur && [[ -z "${SENTRY_PYTHON_VERSION:-}" ]]; then
+      # For Python 3.6.x, we need to patch the source code on Big Sur before building Python
+      # We can remove this once we upgrade to newer versions of Python
+      # cat is used since pyenv would finish to soon when the Python version is already installed
+      curl -sSL https://github.com/python/cpython/commit/8ea6353.patch | cat |
+        pyenv install --skip-existing --patch "${PYENV_VERSION}"
     else
       pyenv install --skip-existing "${PYENV_VERSION}"
     fi