Verify bundled deps using CI

Description

I am the author of https://github.com/php/php-src/blob/7db647dd99/.github/actions/verify-generated-files/action.yml and I would be happy if this integrity concept can be extended also to all extenal/bundled deps like PCRE [1], Unicode tables [2] etc.

The expected behaviour is zero changes after the update is run. This will prevent hiding bad code and prevent human mistakes.

• [1] PCRE2 https://github.com/php/php-src/pull/14498
• [2] Unicode tables https://github.com/php/php-src/pull/7502#issue-1000424830 /w update steps described
• [3] XSSE https://github.com/php/php-src/pull/18413
• [4] uriparser https://github.com/php/php-src/pull/19711
• [5] IR https://github.com/php/php-src/commit/2ff7a18bdc8e1ce184c8df312fe87a178f775761
• [6] timelib https://github.com/php/php-src/commit/a0329dbab009d984926f8817359ba5d83195d960 - https://github.com/derickr/timelib/tags
• [7] xxHash https://github.com/php/php-src/pull/20064
• [8] https://github.com/php/php-src/tree/master/ext/fileinfo/libmagic
• [9] https://github.com/php/php-src/tree/master/ext/standard/libavifinfo https://github.com/php/php-src/pull/21250
• [10] https://github.com/php/php-src/tree/master/ext/mbstring/libmbfl
• [11] https://github.com/php/php-src/tree/master/ext/bcmath/libbcmath
• [12] https://github.com/php/php-src/tree/master/ext/dba 3x libs
• [13] https://github.com/php/php-src/tree/master/ext/hash/murmur (impossible - https://github.com/php/php-src/pull/6059#issuecomment-692012970)
• [14] https://github.com/php/php-src/tree/master/ext/hash/sha3
• [15] https://github.com/php/php-src/tree/master/ext/lexbor/lexbor
• [16] https://github.com/php/php-src/tree/master/ext/dom/lexbor
• [17] https://github.com/php/php-src/tree/master/ext/gd/libgd

This was probably not done yet to not slow down the testing pipelines. The solution is to run the integrity verification of the external sources as a separate workflow only when the source files are changed and always in nightly.

.github/actions/verify-generated-files/action.yml から始め、issue に記載されている未チェックのバンドル依存関係ディレクトリ（IR、libmagic、libavifinfo、libmbfl、libbcmath、libgd を含む）を確認します。分離された workflow の変更されたソースと nightly の動作を定義し、その後、該当する各更新が整合性チェック後に変更をゼロにすることを検証します。