vim, vim-core: upgraded packages to upstream

Upgraded app-editors/vim to version 8.2.3950 on amd64, arm64
Upgraded app-editors/vim-core to version 8.2.3950 on amd64, arm64

Used command:

```
cros_portage_upgrade --upgrade --unstable-ok --board=lakitu:lakitu-arm64 app-editors/vim app-editors/vim-core
```

BUG=b/213665182,b/213665551,b/213665436,b/213665550,b/213665433,b/213665402,b/213300222,b/213300444,b/212383791,b/212383980
TEST=emerge vim,vim-core, presubmit
RELEASE_NOTE=Update vim and vim-core to v8.2.3950. This resolves
CVE-2021-4193, CVE-2021-4192, CVE-2021-4173, CVE-2021-4166, and
CVE-2021-4136.

cos-patch: security-moderate
Change-Id: I5d0c3a96a1cfc7ab02e79ef1b49ec82abe151cc1
Reviewed-on: https://cos-review.googlesource.com/c/third_party/overlays/portage-stable/+/27342
Main-Branch-Verified: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Vaibhav Rustagi <vaibhavrustagi@google.com>
7 files changed