CVE Conversion - handle cases where only 1 version is affected better.

[jasonlhills]

The CVE ID
CVE-2025-58050

Describe the data quality issue observed
This vulnerability affects PCRE2-10.45-RC1 and PCRE2-10.45. PCRE2-10.44 and earlier are not affected.

• NVD: CVE-2025-58050 specifies a CPE of cpe:2.3:a:pcre:pcre2:10.45:*:*:*:*:*:*:*.
• GitHub: GHSA-c2gv-xgf5-5cc2/BIGSLEEP-438254142 specifies affected versions: 10.45

However, in the OSV record, the GIT ranges are:

      "versions": [
        "pcre2-10.38",
        "pcre2-10.38-RC1",
        "pcre2-10.39",
        "pcre2-10.40",
        "pcre2-10.41",
        "pcre2-10.42",
        "pcre2-10.43",
        "pcre2-10.43-RC1",
        "pcre2-10.44",
        "pcre2-10.45"
      ],

Suggested changes to record
The GIT versions should be limited to PCRE2-10.45-RC1 and PCRE2-10.45.

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