release-24.3: sql/export: skip columns with Bit(0) type in parquet test

[aerfrei]

Backport 1/1 commits from #160093.

/cc @cockroachdb/release

Release Justification: test only

---

We were seeing failures on this randomized test when these columns were generated. The testutils parquet decoder can't handle this type (added in #132944) so these fail, but it doesn't represent a real issue.

This fix skips these the randomly generated test cases that include this column type.

Fixes: #154011
Epic: none
Release note: None

[blathers-crl]

Thanks for opening a backport.

Before merging, please confirm that it falls into one of the following categories (select one):

• Non-production code changes. Includes test-only changes, build system changes, etc.
• Fixes for serious issues. Defined in the policy as correctness, stability, or security issues, data corruption/loss, significant performance regressions, breaking working and widely used functionality, or an inability to detect and debug production issues.
• Other approved changes. These changes must be gated behind a disabled-by-default feature flag unless there is a strong justification not to.

Add a brief release justification to the PR description explaining your selection.

Also, confirm that the change does not break backward compatibility and complies with all aspects of the backport policy.

All backports must be reviewed by the TL and EM for the owning area.

[blathers-crl]

✅ PR #160201 is compliant with backport policy

Confidence: high
Backward compatible: true
Explanation: The pull request modifies a test file which is a non-production code according to the backport policy exemption for changes affecting only non-production code, tests, or development tools. The file (pkg/sql/importer/exportparquet_test.go) clearly falls under this category as it's a test file. The PR body also contains a 'Release Justification: test only', providing explicit justification that aligns with the policy guidelines for non-production code changes.

_{🦉 Hoot! I am a Blathers, a bot for CockroachDB. My owner is dev-inf.}

[cockroach-teamcity]

This change is 

[yuzefovich]

@yuzefovich reviewed 1 file and all commit messages.
Reviewable status: complete! 0 of 0 LGTMs obtained (waiting on @aerfrei).