Update requirements.txt to use exact versions

Author: gtjoseph

requirements.txt

@@ -1,8 +1,8 @@
-mkdocs>=1.4.3
-mkdocs-git-revision-date-localized-plugin>=1.2.0
-mkdocs-material>=9.2.0b0
-mkdocs-material-extensions>=1.1.1
-mkdocs-table-reader-plugin>=2.0.1
-mkdocs-awesome-pages-plugin>=2.9.1
-mkdocs-minify-plugin>=0.7.0
-lxml>=4.8.0
+mkdocs==1.4.3
+mkdocs-git-revision-date-localized-plugin==1.2.0
+mkdocs-material==9.2.0b0
+mkdocs-material-extensions==1.1.1
+mkdocs-table-reader-plugin==2.0.1
+mkdocs-awesome-pages-plugin==2.9.1
+mkdocs-minify-plugin==0.7.0
+lxml==4.9.3