fix(ci): Re-enable skipped tests (#5104)

### Description
We had to resort to skipping two tests in
https://github.com/getsentry/sentry-python/pull/5088/files since they
were blocking the release. Re-enabling them here.

It looks like the worst of the flakiness comes with newer coverage
(>=7.11.1). Pinning it here.

#### Issues
Closes #5101
Closes https://linear.app/getsentry/issue/PY-1974/fix-skipped-tests

#### Reminders
- Please add tests to validate your changes, and lint your code using
`tox -e linters`.
- Add GH Issue ID _&_ Linear ID (if applicable)
- PR title should use [conventional
commit](https://develop.sentry.dev/engineering-practices/commit-messages/#type)
style (`feat:`, `fix:`, `ref:`, `meta:`)
- For external contributors:
[CONTRIBUTING.md](https://github.com/getsentry/sentry-python/blob/master/CONTRIBUTING.md),
[Sentry SDK development docs](https://develop.sentry.dev/sdk/), [Discord
community](https://discord.gg/Ww9hbqr)

Author: sentrivana

scripts/populate_tox/tox.jinja

@@ -81,6 +81,8 @@ deps =
     # for justification of the upper bound on pytest
     {py3.6,py3.7}-common: pytest<7.0.0
     {py3.8,py3.9,py3.10,py3.11,py3.12,py3.13,py3.14,py3.14t}-common: pytest
+    # coverage 7.11.1-7.11.3 makes some of our tests flake
+    {py3.14,py3.14t}-common: coverage==7.11.0
 
     # === Gevent ===
     {py3.6,py3.7,py3.8,py3.9,py3.10,py3.11}-gevent: gevent>=22.10.0, <22.11.0

tests/profiler/test_transaction_profiler.py

@@ -266,7 +266,6 @@ def test_minimum_unique_samples_required(
 
 
 @pytest.mark.forked
-@pytest.mark.skipif(sys.version_info >= (3, 14), reason="Test flakes blocking release.")
 def test_profile_captured(
     sentry_init,
     capture_envelopes,

tests/tracing/test_decorator.py

@@ -70,7 +70,6 @@ async def test_trace_decorator_async():
 
 
 @pytest.mark.asyncio
-@pytest.mark.skipif(sys.version_info >= (3, 14), reason="Test flakes blocking release.")
 async def test_trace_decorator_async_no_trx():
     with patch_start_tracing_child(fake_transaction_is_none=True):
         with mock.patch.object(logger, "debug", mock.Mock()) as fake_debug:

tox.ini

@@ -318,6 +318,8 @@ deps =
     # for justification of the upper bound on pytest
     {py3.6,py3.7}-common: pytest<7.0.0
     {py3.8,py3.9,py3.10,py3.11,py3.12,py3.13,py3.14,py3.14t}-common: pytest
+    # coverage 7.11.1-7.11.3 makes some of our tests flake
+    {py3.14,py3.14t}-common: coverage==7.11.0
 
     # === Gevent ===
     {py3.6,py3.7,py3.8,py3.9,py3.10,py3.11}-gevent: gevent>=22.10.0, <22.11.0