feat: add otel ready to use image #400

Job	Run time
generate-matrix	8s
PHP FPM 8.1 on amd64	36s
PHP FPM 8.1 on arm64	25s
PHP FPM 8.2 on amd64	10s
PHP FPM 8.2 on arm64	13s
PHP FPM 8.3 on amd64	16s
PHP FPM 8.3 on arm64	26s
Generate Docker Manifest for PHP 8.1	20s
Generate Docker Manifest for PHP 8.2	19s
Generate Docker Manifest for PHP 8.3	19s
Build Caddy 8.1	1m 12s
FPM with OpenTelemetry (8.1, 8.1.29, sha256:d25c61d176d62c1929bd1d155fc4073b5d8d0db3f4a2d1ae67f58...	15s
Build Caddy 8.2	1m 20s
FPM with OpenTelemetry (8.2, 8.2.23, sha256:a16bc43404e602adb0f8f9662a1319f83d85daf23110bf7e02152...	12s
Build Caddy 8.3	41s
FPM with OpenTelemetry (8.3, 8.3.11, sha256:421373ae5f16b3afa03506de0ecbb4dcf39e4fe817b2a40b5f5c1...	12s
Build Caddy ${{ matrix.php }} with OpenTelemetry	0s
Test Image	1m 59s
	9m 3s

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