BLD: add more versions
xref #17064.
Failures are unrelated to PR.  LGTM. # [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/17065?src=pr&el=h1) Report
> Merging [#17065](https://codecov.io/gh/pandas-dev/pandas/pull/17065?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/c55dbf067d85c3a060a6ffeff2aad24991e95eae?src=pr&el=desc) will **decrease** coverage by `0.04%`.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/17065/graphs/tree.svg?token=eZ4WkYLtcO&src=pr&height=150&width=650)](https://codecov.io/gh/pandas-dev/pandas/pull/17065?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master   #17065      +/-   ##
==========================================
- Coverage   91.05%   91.01%   -0.05%     
==========================================
  Files         161      161              
  Lines       49351    49351              
==========================================
- Hits        44936    44915      -21     
- Misses       4415     4436      +21
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `88.78% <ø> (-0.03%)` | :arrow_down: |
| #single | `40.26% <ø> (-0.07%)` | :arrow_down: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/17065?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/util/\_print\_versions.py](https://codecov.io/gh/pandas-dev/pandas/pull/17065?src=pr&el=tree#diff-cGFuZGFzL3V0aWwvX3ByaW50X3ZlcnNpb25zLnB5) | `15.71% <ø> (ø)` | :arrow_up: |
| [pandas/io/gbq.py](https://codecov.io/gh/pandas-dev/pandas/pull/17065?src=pr&el=tree#diff-cGFuZGFzL2lvL2dicS5weQ==) | `25% <0%> (-58.34%)` | :arrow_down: |
| [pandas/plotting/\_converter.py](https://codecov.io/gh/pandas-dev/pandas/pull/17065?src=pr&el=tree#diff-cGFuZGFzL3Bsb3R0aW5nL19jb252ZXJ0ZXIucHk=) | `63.23% <0%> (-1.82%)` | :arrow_down: |
| [pandas/core/frame.py](https://codecov.io/gh/pandas-dev/pandas/pull/17065?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvZnJhbWUucHk=) | `97.75% <0%> (-0.1%)` | :arrow_down: |

------

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> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/17065?src=pr&el=footer). Last update [c55dbf0...cdd50a1](https://codecov.io/gh/pandas-dev/pandas/pull/17065?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
 @jreback : Everything looks green again! merge away

(leave the issue open though)