[BUG] Bamboo CI 7.0 compatibility and regexp extension

**Describe the bug**
### Bamboo 7.0
In new version of Bamboo CI was changed bamboo_inject_prId -> bamboo_repository_pr_key
Check bamboo.repository.pr.key [here]((https://confluence.atlassian.com/bamboo/bamboo-variables-289277087.html))

### Bamboo CI repo naming
Also regex trigger only repos with underscores (ssh://git@bitbucket.mycompany.com:7999/my_project/my_repository.git)
If you have name style with dots (ssh://git@bitbucket.mycompany.com:7999/my_project/my.repository.git) it fails.

**To Reproduce**
Steps to reproduce the behavior:
1. Run danger in repo with doted name style (ssh://git@bitbucket.mycompany.com:7999/my_project/my.repository.git)
2. Get fail
3.
4.

**Expected behavior**
It should process repo with doted name

**Screenshots**
If applicable, add screenshots to help explain your problem.

** Your Environment**

| software | version
| ---------------- | -------
| danger.js | 10.2.1
| node | v14.5.0
| npm | 6.14.5
| Operating System | macOS Catalina 10.15.5 (19F101)

No files or tests are named. Start by locating the Bamboo CI integration and the regular expression that parses repository names, then reproduce the two reported cases: Bamboo 7.0's pull-request variable and a repository name containing a dot. Done means both cases are processed successfully and are covered by relevant tests.

Written by the indexing model from the issue text.