fix: update pcre2 pattern for android (#5441)

Add pattern to detect libpcre2 version in Android libraries where the
version string format differs from standard Linux binaries.

- Add FILENAME_PATTERNS to match pcre2 library files
- Add VERSION_PATTERNS for Android format with version+date and
  "this version of PCRE2" error message as anchor
- Add test case for Android libpcre2 format

Author: jackulau

cve_bin_tool/checkers/pcre2.py

@@ -15,6 +15,10 @@
 
 class Pcre2Checker(Checker):
     CONTAINS_PATTERNS: list[str] = []
-    FILENAME_PATTERNS: list[str] = []
-    VERSION_PATTERNS = [r"BSR_UNICODE\)\r?\n([0-9]+\.[0-9]+)"]
+    FILENAME_PATTERNS: list[str] = [r"pcre2"]
+    VERSION_PATTERNS = [
+        r"BSR_UNICODE\)\r?\n([0-9]+\.[0-9]+)",
+        r"DEFINE\r?\n([0-9]+\.[0-9]+) [0-9]{4}-[0-9]{2}-[0-9]{2}",
+        r"([0-9]+\.[0-9]+) [0-9]{4}-[0-9]{2}-[0-9]{2}\r?\nBSR_ANYCRLF",
+    ]
     VENDOR_PRODUCT = [("pcre", "pcre2")]

test/test_data/pcre2.py

@@ -2,7 +2,17 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 mapping_test_data = [
-    {"product": "pcre2", "version": "10.22", "version_strings": ["BSR_UNICODE)\n10.22"]}
+    {"product": "pcre2", "version": "10.22", "version_strings": ["BSR_UNICODE)\n10.22"]},
+    {
+        "product": "pcre2",
+        "version": "10.33",
+        "version_strings": ["DEFINE\n10.33 2019-04-16"],
+    },
+    {
+        "product": "pcre2",
+        "version": "10.40",
+        "version_strings": ["10.40 2022-04-14\nBSR_ANYCRLF"],
+    },
 ]
 package_test_data = [
     {