RFR: Replace affects_versions.png with SVG [v2]

[Alexey Ivanov]

> Replace `affects_versions.png` with Scalable Vector Graphics (SVG) image.
> 
> <details>
> <summary>PNG vs SVG</summary>
> 
> **PNG:**\
> ![affects_versions.png](https://github.com/openjdk/guide/blob/be88a6debcb0dfb7f8fb0e8f3e95ff35950ca9c4/src/images/affects_versions.png?raw=true)
> 
> **SVG:**\
> ![affects_versions.svg](https://raw.githubusercontent.com/aivanov-jdk/dev-guide/bc65ea67251cc68360fc746a77200d8c93fd78b5/src/images/affects_versions.svg)
> </details>
> 
> SVG is crisper, especially on High DPI monitors, its size is much smaller (1.04 KB vs 26.24 KB), it's easier to edit and the edit history is preserved.

Alexey Ivanov has updated the pull request incrementally with three additional commits since the last revision:

 - Red cross under 11-wnf
 - Dashed line to 12-na label
 - End 12-na with T-like instead of arrow

-------------

Changes:
  - all: https://git.openjdk.org/guide/pull/147/files
  - new: https://git.openjdk.org/guide/pull/147/files/bc65ea67..3a13348b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=guide&pr=147&range=01
 - incr: https://webrevs.openjdk.org/?repo=guide&pr=147&range=00-01

  Stats: 10 lines in 1 file changed: 7 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/guide/pull/147.diff
  Fetch: git fetch https://git.openjdk.org/guide.git pull/147/head:pull/147

PR: https://git.openjdk.org/guide/pull/147